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topoisomerases

" in MedChemExpress (MCE) Product Catalog:

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By Research Areas:	Cancer (489) Cardiovascular Disease (8) Endocrinology (2) Infection (185) Inflammation/Immunology (37) Metabolic Disease (6) Neurological Disease (14)
Click Chemistry:	ADC Synthesis (1) DBCO (2) Alkynes (2)
Oligonucleotides:	Cholesterol (1)

609

Inhibitors & Agonists

Fluorescent Dye

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Peptides

Inhibitory Antibodies

103

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Isotope-Labeled Compounds

Click Chemistry

Oligonucleotides

Targets Recommended: Topoisomerase

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-161980

Topoisomerases/ribosomes-IN-1	Topoisomerase	Infection
Topoisomerases/ribosomes-IN-1 (compound 30f) is an inhibitor of ribosomes and *topoisomerases, and has inhibitory effects on constitutively macrolide-resistant bacteria. Topoisomerases*/ribosomes-IN-1 can inhibit bacterial protein synthesis (IC₅₀: 0.647 μM) and DNA replication (IC₅₀: 0.218 μM) .

HY-149002

Topoisomerase I/II inhibitor 4	Topoisomerase Apoptosis	Cancer
Topoisomerase I/II inhibitor 4 (compound F16) is a potent topoisomerase I (Topo I) and II (Topo II) dual inhibitor. Topoisomerase I/II inhibitor 4 inhibits cell proliferation, invasion and migration and induces apoptosis. Topoisomerase I/II inhibitor 4 can be used for liver cancer research .

HY-169106

Topoisomerase inhibitor 4	Topoisomerase Apoptosis	Cancer
Topoisomerase inhibitor 4 (compound 45) is a potent *Topoisomerase1/2* inhibitor. Topoisomerase inhibitor 4 causes cell cycle arrest in the G2/M phase by inducing Apoptosis. Topoisomerase inhibitor 4 has antitumor activity .

HY-168849

Topoisomerase inhibitor 5	Topoisomerase Bacterial	Infection
Topoisomerase inhibitor 5 (compound 158) is a *Bacterial Topoisomerase* Inhibitor** inhibitor with the lowest inhibitory concentration of 0.125 μg/mL. Topoisomerase inhibitor has antituberculous activity .

HY-156969

Topoisomerase I inhibitor 11	Topoisomerase Btk	Cancer
Topoisomerase I inhibitor 11 is a potent inhibitor of *Topoisomerase* I. Topoisomerase I inhibitor 11 can bind to BTK .

HY-116933

Murrayanol	Topoisomerase Bacterial	Infection Inflammation/Immunology
Murrayanol is a natural carbazole alkaloid with a variety of biological activities. Murrayanol shows anti-inflammatory, topoisomerase I and topoisomerase II (Topoisomerase) inhibition activities. Murrayanol also as a mosquitocidal and antimicrobial .

HY-N15319

Eupolauridine Canangine	Topoisomerase Fungal	Infection
Eupolauridine (Canangine) is a selective *DNA topoisomerase* II inhibitor with IC₅₀** values of 20 μM for fungal topoisomerase I and 33 μM for human topoisomerase I. Eupolauridine exerts antifungal activity by inhibiting the catalytic activity of topoisomerase II and stabilizing its cleavage complex with DNA, leading to DNA damage. Eupolauridine is promising for research of fungal infectious diseases .

HY-N4329

Nidulalin A	Topoisomerase	Others
Nidulalin A is a *DNA topoisomerase* II inhibitor with an IC₅₀ of 2.2 μM. Nidulalin A has an IC₅₀ of 172 μM for DNA topoisomerase I**. Nidulalin A has certain cytotoxicity .

HY-117543

Ethonafide AMP-53; 6-Ethoxyazonafide	Topoisomerase	Cancer
Ethonafide (AMP-53) is an anthracene-containing derivative of Amonafide that belongs to the Azonafide series of anticancer agents. Ethonafide (AMP-53) inhibits topoisomerase II activity by stabilizing the enzyme-DNA complex, involving both topoisomerase IIα and β .

HY-174837

Topoisomerase IIα-IN-11	Topoisomerase	Cancer
Topoisomerase IIα-IN-11 (Compound 16h) is a potent Topoisomerase IIα inhibitor. Topoisomerase IIα-IN-11 shows significant inhibition on melanoma A2058 cell lines (IC₅₀ 3-6 μM). Topoisomerase IIα-IN-11 is promising for research of cancers (especially melanoma) .

HY-146437

Topoisomerase I inhibitor 6	Topoisomerase	Cancer
Topoisomerase I inhibitor 6 (Compound 3) is a potent inhibitor of Topoisomerase I. Topoisomerase I inhibitor 6 is able to trap DNA-Top1 cleavage complex and found to be less cytotoxic in non-cancerous cell line. Topoisomerase I inhibitor 6 has the potential for the research of cancer diseases .

HY-124552

Epolactaene	DNA/RNA Synthesis Topoisomerase	Others
Epolactaene is a potent Topoisomerase II and DNA Polymerase inhibitor with IC₅₀ values of 10, 25, 94 µM for Topoisomerase II, DNA Polymerase α, DNA Polymerase β, respectively .

HY-160774

Val-Cit-PABC-DOX	Drug-Linker Conjugates for ADC Topoisomerase	Cancer
Val-Cit-PABC-DOX (compound 10109), an epsilon-poly-L-lysine-based drug conjugate, is an agent-linker conjugate for ADC by using a DNA topoisomerase I and topoisomerase II inhibitor, Doxorubicin (HY-15142), linked via the linker, Val-Cit-PABC .

HY-162342

Topoisomerase I inhibitor 14	Topoisomerase	Cancer
Topoisomerase I inhibitor 14 (Compound 4h) is an inhibitor for Topoisomerase I. Topoisomerase I inhibitor 14 inhibits proliferation of A549 and C6 with IC₅₀s of 4.56 μM and 13.17 μM, without significant toxicity in healthy cells NIH3T3 (IC₅₀ is 74.44 μM), which exhibits anticancer potency .

HY-W278582

Topoisomerase II inhibitor 14	Topoisomerase Apoptosis	Cancer
Topoisomerase II inhibitor 14 is a potent topoisomerase II inhibtor. Topoisomerase II inhibitor 14 induces apoptosis and arrests cell cycle at S phase and G2-M phases. Topoisomerase II inhibitor 14 exhibits antioxidant effect and decreases the level of GSH, MDA, and NO. Topoisomerase II inhibitor 14 can be used for the study of neck squamous cell carcinoma (HNSCC) .

HY-163118

Topoisomerase II inhibitor 17	Topoisomerase Apoptosis	Cancer
Topoisomerase II inhibitor 17 (compound 4c) is an inhibitor of thiazolopyrimidine topoisomerase (Topoisomerase) Top II (IC₅₀: 0.23 μM). Topoisomerase II inhibitor 17 can significantly cause cell cycle disruption and apoptosis .

HY-162381

Topoisomerase II inhibitor 19	Topoisomerase	Cancer
Topoisomerase II inhibitor 19 (compound 5h) is a DNA intercalator and topoisomerase II inhibitor (IC₅₀ value of 0.34 μM). Topoisomerase II inhibitor 19 would induce detectable potent damage in ctDNA .

HY-155645

Topoisomerase II inhibitor 15	Topoisomerase Apoptosis	Cancer
Topoisomerase II inhibitor 15 (compound 2g) is a Topoisomerase II inhibitor. Topoisomerase II inhibitor 15 potently is an apoptotic inducer with greater selectivity against head and neck tumors .

HY-123363

Tafluposide F-11782	Topoisomerase	Cancer
Tafluposide (F-11782) is a DNA topoisomerase inhibitor. Tafluposide has antitumor activity .

HY-172229

NBTI 5463	Topoisomerase Bacterial	Infection
NBTI 5463 is a bacterial type II topoisomerases (topoisomerase II) inhibitor with antibacterial activity. NBTI 5463 inhibits GyrA and TopoIV in Pseudomonas aeruginosa and Escherichia coli. NBTI 5463 binds to topoisomerase II to prevent DNA cleavage and religation, inhibiting bacterial DNA replication and transcription. NBTI 5463 is promising for research of Gram-negative bacterial infection .

HY-174227

Topoisomerase inhibitor 6	Topoisomerase Bacterial	Infection
Topoisomerase inhibitor 6 (Compound REDX05931) is a dual irreversible inhibitor of DNA gyrase and topoisomerase IV (MIC=0.06 μg/mL against fluoroquinolone-resistant S. aureus). Topoisomerase inhibitor 6 blocks DNA strand break-reunion, inducing lethal DNA damage. Topoisomerase inhibitor 6 is promising for research of Gram-positive bacterial infections (e.g., S. aureus, S. pneumoniae) .

HY-107133

Simmitecan hydrochloride	Topoisomerase Cytochrome P450	Cancer
Simmitecan hydrochloride, a 9-substituted lipophilic Camptothecin (HY-16560) derivative, is a potent topoisomerase I inhibitor. Simmitecan hydrochloride is an anticancer agent .

HY-149309

Topoisomerase inhibitor 2	Topoisomerase	Infection
Topoisomerase inhibitor 2 (18C) is a bacterial topoisomeraseinhibitor that exhibits potent broad-spectrum activity against multidrug-resistant Gram-negative bacteria .

HY-W781148

Suptopin-2	Topoisomerase	Cancer
Sutopin-2 is a topoisomerase II inhibitor. Suptopin-2 affects cell cycle progression and stability of microtubules. Sutopin-2 induces cell cycle arrest by regulating the nucleocytoplasmic transport of cyclin B1 .

HY-146497

Topoisomerase I inhibitor 7	Topoisomerase	Cancer
Topoisomerase I inhibitor 7 (Compound 8) is a potent inhibitor of Topoisomerase I. Topoisomerase I inhibitor 7 significantly inhibits tumor growth (up to 79%) and increases the lifespan (153%) of mice bearing P388 lymphoma transplants. Topoisomerase I inhibitor 7 indicates prospects for further search of new antitumor agent candidates among the heteroarene-fused anthraquinones .

HY-19024

Merbarone NSC 336628	Topoisomerase	Cancer
Merbarone (NSC 336628) is an orally active inhibitor of topoisomerase II. Merbarone acts primarily by blocking topoisomerase II-mediated DNA cleavage without stabilizing topo II-DNA covalent complexes. Merbarone is an anticancer agent .

HY-173458

NBTIs-IN-7	Topoisomerase	Infection
NBTIs-IN-7 (compound 276) is a *novel bacterial topoisomerase* (NBTIs)** inhibitor. NBTIs-IN-7 induces both single- and double-strand DNA strand breaks in the presence of gyrase .

HY-125930A

T-2513 hydrochloride	Topoisomerase DNA/RNA Synthesis	Cancer
T-2513 hydrochloride is a selective topoisomerase I inhibitor. T-2513 hydrochloride binds covalently to and stabilizes the topoisomerase I-DNA complex and inhibits DNA replication and RNA synthesis, ultimately leading to cell death .

HY-125930

T-2513	Topoisomerase DNA/RNA Synthesis	Cancer
T-2513 is a selective topoisomerase I inhibitor. T-2513 binds covalently to and stabilizes the topoisomerase I-DNA complex and inhibits DNA replication and RNA synthesis, ultimately leading to cell death .

HY-162101

Topoisomerase inhibitor 3	Topoisomerase	Cancer
Topoisomerase inhibitor 3 (compound 9) is a potent *Topoisomerase* inhibitor. Topoisomerase inhibitor 3 shows antiproliferative and anti-tumor activity .

HY-113642

CP-67804	Topoisomerase	Cancer
CP-67804 is a quinolone derivative, is a topoisomerase II-targeted agent. CP-67804 effectively enhances DNA cleavage mediated by eukaryotic topoisomerase II. CP-67804 has potential as an antineoplastic agent .

HY-N6880

Rabdosiin (+)-Rabdosiin	HIV Topoisomerase	Infection Inflammation/Immunology
Rabdosiin is a tetramer of caffeic acid isolated from the stem of Ocimum sanctum. Rabdosiin possess anti-allergic activity, anti-HIV activity and inhibition on DNA topoisomerase .

HY-162587

Fagopyrine	Topoisomerase	Cancer
Fagopyrine is a DNA topoisomerase I (Topo I) inhibitor. Fagopyrine is a photosensitizer that can be used in the study of tumors .

HY-B0063

Gimatecan ST1481	Topoisomerase	Cancer
Gimatecan (ST1481) is a potent topoisomerase I inhibitor. Gimatecan is an orally bioavailable camptothecin analogue with antitumor activity .

HY-147861

Topoisomerase II inhibitor 11	Topoisomerase Apoptosis	Cancer
Topoisomerase II inhibitor 11 (compound 3d) is a potent Topoisomerase II inhibitor, with an IC₅₀ of 2.89 μM. Topoisomerase II inhibitor 11 shows 92.46% inhibition on renal cancer cell line A498 with an IC₅₀ of 3.5 μM. Topoisomerase II inhibitor 11 causes cell cycle arrest at the G2/M phase leading to cell proliferation inhibition and pro-apoptotic activity .

HY-146316

Topoisomerase II inhibitor 6	Topoisomerase	Cancer
Topoisomerase II inhibitor 6 (Compound 5), a tryptanthrin derivative, is a potent and selective inhibitor of topoisomerase II. Topoisomerase II inhibitor 6 exhibits antiproliferative activity on different tumor cell lines. Topoisomerase II inhibitor 6 blocks the cell cycle of CCRF-CEM in the G2 phase and induces DNA DSB. Topoisomerase II inhibitor 6 has the potential for the research of cancer diseases .

HY-155693

Topoisomerase II inhibitor 16	Topoisomerase Parasite	Infection
Topoisomerase II inhibitor 16 (compound CT3) is a selective, orally active, brain-penetrant and irreversible *trypanosomal topoisomerase* II** inhibitor by stabilizing double-stranded DNA:enzyme cleavage complexes. Topoisomerase II inhibitor 16 has the potential for Chagas disease research .

HY-143265

Topoisomerase I inhibitor 2	Topoisomerase Apoptosis Caspase	Cancer
Topoisomerase I inhibitor 2 (ZML-8) is a highly selective inhibitor of *DNA topoisomerase* I (Top1*). Topoisomerase* I inhibitor 2 inhibits Top1 activity and results DNA damage. Topoisomerase I inhibitor 2 blocks G2/M phase and induces apoptosis, exhibits anti-tumor effect .

HY-N10367

Corydamine	Topoisomerase	Cancer
Corydamine, 3-arylisoquinoline alkaloid, is a potent *DNA topoisomerase* I/II** inhibitor. Corydamine has anti-cancer activity .

HY-N3488

Isodiospyrin	Topoisomerase Bacterial Fungal	Infection Cancer
Isodiospyrin, a natural dimeric naphthoquinone, is a human DNA topoisomerase I (Topoisomerase) inhibitor. Isodiospyrin can prevent both DNA relaxation and kinase activities of human topoisomerase I. Isodiospyrin shows anticancer, antibacterial and antifungal activities .

HY-N12129

6,6′-Dihydroxythiobinupharidine	Cathepsin	Others
6,6′-Dihydroxythiobinupharidine is a cysteine proteases inhibitor. 6,6′-Dihydroxythiobinupharidine can enhance DNA cleavage mediated by human topoisomerase IIα and IIβ ~8-fold and ~3-fold, respectively .

HY-19024R

Merbarone (Standard)	Topoisomerase	Cancer
Merbarone (Standard) is the analytical standard of Merbarone. This product is intended for research and analytical applications. Merbarone (NSC 336628) is an orally active inhibitor of topoisomerase II. Merbarone acts primarily by blocking topoisomerase II-mediated DNA cleavage without stabilizing topo II-DNA covalent complexes. Merbarone is an anticancer agent .

HY-162271

Antibacterial agent 187	Topoisomerase Fungal	Infection
Antibacterial agent 187 (IKE7) is a derivative containing imidazole and triazolacridone structures that target yeast topoisomerase II. Antibacterial agent 187 has antifungal activity and MIC value of resistance to fluconazole (HY-B0101) is 32-64 μg/mL .

HY-152965

Biotin-doxorubicin	Topoisomerase Antibiotic Apoptosis Autophagy	Infection Cancer
Biotin-doxorubicin is a Biotin-labeled Doxorubicin. Doxorubicin, a broad-spectrum anthracycline antibiotic, is a topoisomerase II inhibitor .

HY-B0395D

(1R,2S,7R)-Sitafloxacin (1R,2S,7R)-DU-6859a; DU-6857	Topoisomerase Bacterial	Inflammation/Immunology
(R)-Sitafloxacin (DU-6857), a stereoisomer of Sitafloxacin (DU-6859a), is also an inhibitor of *topoisomerases*, with an IC₅₀ of 0.18 μg/mL of DNA gyrase .

HY-145397

(4-NH2)-Exatecan	ADC Payload Topoisomerase	Cancer
(4-NH2)-Exatecan, a *topoisomerase* inhibitor, is a derivative of Exatecan. (4-NH2)-Exatecan can be used in the synthesis of antibody-drug conjugates (ADCs) (US20200306243A1, compound A) .

HY-167671

BE-10988	Topoisomerase	Cancer
BE-10988 is a DNA topoisomerase inhibitor. BE-10988 inhibits the growth of Doxorubicin (HY-15142A)-resistant and vincristine-resistant P388 mouse leukemia cell lines by increasing the formation of DNA topoisomerase complexes .

HY-N6054

Niranthin	Parasite Topoisomerase	Infection Inflammation/Immunology
Niranthin, a lignan with a wide spectrum of pharmacological activities. Niranthin is a potent and non-competitive inhibitor of heterodimeric type IB topoisomerase of L. donovani. Niranthin can be used for the research of drug-resistant leishmaniasis research.

HY-13727A

Pixantrone 3 Publications Verification BBR 2778	Topoisomerase	Cancer
Pixantrone (BBR 2778) dimaleate is a topoisomerase II inhibitor and DNA intercalator, with anti-tumor activity.

HY-164143

T638	Topoisomerase	Cancer
T638 is a topoisomerase II (TOP2) inhibitor. T638 inhibits TOP2A activity with a IC₅₀ of 0.7 uM. T638 strongly inhibits cancer cell growth .

Cat. No.	Product Name	Type

HY-13631AG

Exatecan (mesylate) (GMP) DX8951f (GMP)	Fluorescent Dye
Exatecan mesylate (DX8951f ) GMP is a GMP-class Exatecan (HY-13631). Exatecan is a *DNA topoisomerase* I inhibitor, with an IC₅₀** of 2.2 μM (0.975 μg/mL), and can be used in cancer research .

HY-N2306R

Aclacinomycin A (Standard)

Aclarubicin (Standard)

Fluorescent Dyes/Probes

Aclacinomycin A (Standard) is the analytical standard of Aclacinomycin A. This product is intended for research and analytical applications. Aclacinomycin A (Aclarubicin) is an orally active and potent anthracycline antitumor antibiotic. Aclacinomycin A is an inhibitor of topoisomerase I and II. Aclacinomycin A inhibits synthesis of nucleic acid, especially RNA. Aclacinomycin A might inhibit the 26S protease complex as well as the ubiquitin-ATP-dependent proteolysis .

HY-16700G

PNU-159682 (GMP)	Fluorescent Dye
PNU-159682 GMP is a GMP grade PNU-159682 (HY-16700). PNU-159682, a metabolite of the anthracycline Nemorubicin, is a highly potent DNA topoisomerase II inhibitor with excellent cytotoxicity. PNU-159682 acts as a more potent and tolerated ADC cytotoxin than Doxorubicin for ADC synthesis. PNU-159682 can be used in EDV-nanocell technology to overcome agent resistance.

Cat. No.	Product Name	Type

HY-13631AG

Exatecan (mesylate) (GMP) DX8951f (GMP)	Biochemical Assay Reagents
Exatecan mesylate (DX8951f ) GMP is a GMP-class Exatecan (HY-13631). Exatecan is a *DNA topoisomerase* I inhibitor, with an IC₅₀** of 2.2 μM (0.975 μg/mL), and can be used in cancer research .

HY-143692

SQDG	Drug Delivery
SQDG inhibits topoisomerase I and P-selectin receptor, exhibits anti-inflammatory, antiviral and antitumor activities. SQDG is a glycolipid that possesses sugar moieties in their head groups. SQDG is a membrane lipid that can be used to investigate the effects of structural lipid in LNP formulations .

HY-16700G

PNU-159682 (GMP)	Biochemical Assay Reagents
PNU-159682 GMP is a GMP grade PNU-159682 (HY-16700). PNU-159682, a metabolite of the anthracycline Nemorubicin, is a highly potent DNA topoisomerase II inhibitor with excellent cytotoxicity. PNU-159682 acts as a more potent and tolerated ADC cytotoxin than Doxorubicin for ADC synthesis. PNU-159682 can be used in EDV-nanocell technology to overcome agent resistance.

Cat. No.	Product Name	Target	Research Area

HY-P10742

CBX-12	Peptide-Drug Conjugates (PDCs) Topoisomerase	Cancer
CBX-12 is a PDC (peptide drug conjugate) that targets tumors in an antigen-independent manner and exhibits antitumor activity. CBX-12 consists of a pH-sensitive peptide (pHLIP), a self-immolating linker, and a topoisomerase 1 (TOP1) inhibitor Exatecan (HY-13631) .

HY-P10765

DTS-108	Peptide-Drug Conjugates (PDCs) Topoisomerase	Cancer
DTS-108 is a prodrug of SN38 (HY-13704) (a Topoisomerase I inhibitor). DTS-108 is a conjugate generated by linking SN38 to a human oligopeptide via an esterase sensitive cross-linker. DTS-108 exhibits anti-tumor activity against colorectal, lung, and mammary cancer .

Cat. No.	Product Name	Target	Research Area

HY-164152

ADC Control Human IgG1-Deruxtecan (DAR 4)	Antibody-Drug Conjugates (ADCs) Topoisomerase	Cancer
ADC Control Human IgG1-Deruxtecan (DAR 4) is a humanized monoclonal antibody that is an isotype control of ADC human IgG1-Deruxtecan and can inhibit *DNA topoisomerase* I**. The antibody portion is Human IgG1 kappa, Isotype Control (HY-P99001), and the drug-linker conjugate for ADC is Deruxtecan (HY-13631E) .

HY-P3371

Ifinatamab deruxtecan DS-7300a; MABX-9001a	Antibody-Drug Conjugates (ADCs)	Cancer
Ifinatamab deruxtecan (DS-7300a) is an ADC that binds an anti-B7-H3 antibody to the DNA topoisomerase I inhibitory anti-tumor drug DXd. Ifinatamab deruxtecan has antitumor activity .

HY-P99813

Patritumab deruxtecan HER3-DXd; U3-1402	Antibody-Drug Conjugates (ADCs)	Cancer
Patritumab deruxtecan (HER3-DXd) is an antibody-drug conjugate (ADC) consisting of a fully human anti-HER3 IgG1 monoclonal antibody Patritumab (HY-P99275) attached to a topoisomerase I inhibitor payload via a tetrapeptide-based cleavable linker. Patritumab deruxtecan shows anticancer activity .

HY-P99843

Datopotamab	TROP2 ADC Antibody	Cancer
Datopotamab (CDP7657) is a humanized anti trophoblast cell surface antigen 2 (TROP2) antibody. Datopotamab can generate antibody drug conjugates (ADC) (HY-141598) with DNA topoisomerase I inhibitor Deruxtecan (HY-13631E). Datopotamab can be used in the study of triple negative breast cancer and non-small cell lung cancer .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-N6880

Rabdosiin (+)-Rabdosiin	Structural Classification Classification of Application Fields Labiatae Lignans Phenylpropanoids Balsamorhiza macrophylla Nutt. Plants Inflammation/Immunology Disease Research Fields	HIV Topoisomerase
Rabdosiin is a tetramer of caffeic acid isolated from the stem of Ocimum sanctum. Rabdosiin possess anti-allergic activity, anti-HIV activity and inhibition on DNA topoisomerase .

HY-N3488

Isodiospyrin	Quinones Structural Classification other families Diospyros virginiana L. Source classification Benzene Quinones Plants	Topoisomerase Bacterial Fungal
Isodiospyrin, a natural dimeric naphthoquinone, is a human DNA topoisomerase I (Topoisomerase) inhibitor. Isodiospyrin can prevent both DNA relaxation and kinase activities of human topoisomerase I. Isodiospyrin shows anticancer, antibacterial and antifungal activities .

HY-116933

Murrayanol	Alkaloids Structural Classification Rutaceae Murraya koenigii (L.) Spreng Plants Indole Alkaloids	Topoisomerase Bacterial
Murrayanol is a natural carbazole alkaloid with a variety of biological activities. Murrayanol shows anti-inflammatory, topoisomerase I and topoisomerase II (Topoisomerase) inhibition activities. Murrayanol also as a mosquitocidal and antimicrobial .

HY-N15319

Eupolauridine Canangine	Structural Classification Alkaloids Other Alkaloids Cananga odorata Source classification Plants Annonaceae	Topoisomerase Fungal
Eupolauridine (Canangine) is a selective *DNA topoisomerase* II inhibitor with IC₅₀** values of 20 μM for fungal topoisomerase I and 33 μM for human topoisomerase I. Eupolauridine exerts antifungal activity by inhibiting the catalytic activity of topoisomerase II and stabilizing its cleavage complex with DNA, leading to DNA damage. Eupolauridine is promising for research of fungal infectious diseases .

HY-N4329

Nidulalin A	Structural Classification Microorganisms Ketones, Aldehydes, Acids Source classification	Topoisomerase
Nidulalin A is a *DNA topoisomerase* II inhibitor with an IC₅₀ of 2.2 μM. Nidulalin A has an IC₅₀ of 172 μM for DNA topoisomerase I**. Nidulalin A has certain cytotoxicity .

HY-124552

Epolactaene	Structural Classification Natural Products Microorganisms Source classification	DNA/RNA Synthesis Topoisomerase
Epolactaene is a potent Topoisomerase II and DNA Polymerase inhibitor with IC₅₀ values of 10, 25, 94 µM for Topoisomerase II, DNA Polymerase α, DNA Polymerase β, respectively .

HY-N10367

Corydamine	Alkaloids Corydalis bulleyana Diels Classification of Application Fields Source classification Plants Isoquinoline Alkaloids Disease Research Fields Papaveraceae Cancer	Topoisomerase
Corydamine, 3-arylisoquinoline alkaloid, is a potent *DNA topoisomerase* I/II** inhibitor. Corydamine has anti-cancer activity .

HY-N12129

6,6′-Dihydroxythiobinupharidine	Structural Classification Alkaloids Terpenoids Other Alkaloids Sesquiterpenes Source classification Plants Nuphar pumila (Timm) de Candolle Nymphaeaceae	Cathepsin
6,6′-Dihydroxythiobinupharidine is a cysteine proteases inhibitor. 6,6′-Dihydroxythiobinupharidine can enhance DNA cleavage mediated by human topoisomerase IIα and IIβ ~8-fold and ~3-fold, respectively .

HY-167671

BE-10988	Structural Classification Natural Products Microorganisms Source classification	Topoisomerase
BE-10988 is a DNA topoisomerase inhibitor. BE-10988 inhibits the growth of Doxorubicin (HY-15142A)-resistant and vincristine-resistant P388 mouse leukemia cell lines by increasing the formation of DNA topoisomerase complexes .

HY-N6054

Niranthin	Infection Classification of Application Fields Phyllanthus amarus chumacher & Thonning Source classification Lignans Euphorbiaceae Phenylpropanoids Plants Inflammation/Immunology Disease Research Fields	Parasite Topoisomerase
Niranthin, a lignan with a wide spectrum of pharmacological activities. Niranthin is a potent and non-competitive inhibitor of heterodimeric type IB topoisomerase of L. donovani. Niranthin can be used for the research of drug-resistant leishmaniasis research.

HY-N15597

Melicopidine NSC 34757	Structural Classification Alkaloids Other Alkaloids Source classification Rutaceae Medicosma subsessilis T.G.Hartley Plants	Topoisomerase
Melicopidine (NSC 34757) is a DNA topoisomerase inhibitor, which is an acridone alkaloid found in the bark of Medicosma subsessilis. Melicopidine exerts potential antitumor activity by binding to DNA or inhibiting related enzyme activity .

HY-N6054R

Niranthin (Standard)	Phyllanthus amarus chumacher & Thonning Source classification Lignans Euphorbiaceae Phenylpropanoids Plants	Reference Standards Parasite Topoisomerase
Niranthin (Standard) is the analytical standard of Niranthin. This product is intended for research and analytical applications. Niranthin, a lignan with a wide spectrum of pharmacological activities. Niranthin is a potent and non-competitive inhibitor of heterodimeric type IB topoisomerase of L. donovani. Niranthin can be used for the research of drug-resistant leishmaniasis research.

HY-N0872

Isosteviol (-)-Isosteviol; iso-Steviol	Structural Classification other families Classification of Application Fields Terpenoids Source classification Diterpenoids Plants Disease Research Fields Cancer	Interleukin Related Reactive Oxygen Species (ROS) Topoisomerase
Isosteviol ((-)-Isosteviol) is a derivative of Stevioside through acid catalyzed hydrolysis of Stevioside. Isosteviol inhibits DNA polymerase and DNA topoisomerase and has antibacterial, anticancer and anti-tuberculosis effects .

HY-N0872R

Isosteviol (Standard) (-)-Isosteviol (Standard); iso-Steviol (Standard)	Structural Classification other families Terpenoids Source classification Diterpenoids Plants	Interleukin Related Reference Standards Reactive Oxygen Species (ROS) Topoisomerase
Isosteviol (Standard) is the analytical standard of Isosteviol. This product is intended for research and analytical applications. Isosteviol ((-)-Isosteviol) is a derivative of Stevioside through acid catalyzed hydrolysis of Stevioside. Isosteviol inhibits DNA polymerase and DNA topoisomerase and has antibacterial, anticancer and anti-tuberculosis effects .

HY-N10495

Seconeolitsine	Infection Structural Classification Microorganisms Classification of Application Fields Antibiotics Source classification Disease Research Fields	Antibiotic Bacterial Topoisomerase
Seconeolitsine, an antibiotic, and is an inhibitor of targeting topoisomerase I (TopA). Seconeolitsine also is a new antimicrobial agent that can inhibit S. pneumoniae growth. Seconeolitsine can inhibit TopA relaxation activity with an IC₅₀ value of 17 μM. Seconeolitsine can be used for the research of S. pneumoniae infections resistant to other antibiotics .

HY-16560

Camptothecin 50+ Cited Publications Campathecin; (S)-(+)-Camptothecin; CPT	Infection Structural Classification Alkaloids Classification of Application Fields Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants Disease Research Fields	Topoisomerase ADC Payload MicroRNA Influenza Virus Apoptosis Fungal Antibiotic
Camptothecin (CPT), a kind of alkaloid, is a *DNA topoisomerase* I (Topo I) inhibitor with an IC₅₀ of 679 nM . Camptothecin (CPT) exhibits powerful antineoplastic activity against colorectal, breast, lung and ovarian cancers, modulates hypoxia-inducible factor-1α (HIF-1α) activity by changing microRNAs (miRNA)** expression patterns in human cancer cells .

HY-19825

Rebeccamycin	Structural Classification Microorganisms Classification of Application Fields Antibiotics Source classification Disease Research Anticancer Disease Research Fields Other Antibiotics Cancer	Topoisomerase ADC Payload Antibiotic
Rebeccamycin, an antitumor antibiotic, inhibits *DNA topoisomerase* I*. Rebeccamycin appears to exert its primary antineoplastic effect by poisoning topoisomerase* I and has negligible effect on protein kinase C and topoisomerase II .

HY-N0354

Anthraquinone	Seeds of Cassia tora Linn. Quinones Structural Classification other families Classification of Application Fields Leguminosae Anthraquinones Source classification Other Diseases Plants Disease Research Fields	Virus Protease Topoisomerase Apoptosis
Anthraquinone is used as a precursor for dye formation and agrochemicals, existing in different organisms, such as bacteria, fungi, plants, and some animals. Anthraquinone has biological activities: anticancer, antiinflammatory, diuretic, antiarthritic, antifungal, antibacterial, antimalarial and antioxidant. Anthraquinone also plays an important role in the primary metabolism of plants by acting on the electron transport chain through the inhibition of energy transfer in the photosynthetic process. Anthraquinone can intercalates into DNA and inhibits the topoisomerase II (topo II) enzyme, resulting in cell death via Apoptosis .

HY-123589

Gyramide A	Structural Classification Alkaloids Microorganisms Pyrrole Alkaloids Source classification	Bacterial
Gyramide A is a compound mentioned in the study of the protective effect of Qnr protein on bacterial topoisomerase. Qnr has no protective effect on it, and its activity is different from that of other topoisomerase inhibitors.

HY-N6800

Netropsin	Structural Classification Natural Products Microorganisms Source classification	Antibiotic DNA/RNA Synthesis Bacterial Influenza Virus Orthopoxvirus
Netropsin dihydrochloride is a small-molecule MGB (minor-groove binder) and antibiotic, inhibits the catalytic activity of isolated topoisomerase and interferes with the stabilization of the cleavable complexes of topoisomerase II and I in nuclei. Netropsin dihydrochloride has antibacterial and antiviral activity .

HY-N6800A

Netropsin dihydrochloride	Classification of Application Fields Inflammation/Immunology Disease Research Fields	Antibiotic DNA/RNA Synthesis Bacterial Influenza Virus Orthopoxvirus
Netropsin dihydrochloride is a small-molecule MGB (minor-groove binder) and antibiotic, inhibits the catalytic activity of isolated topoisomerase and interferes with the stabilization of the cleavable complexes of topoisomerase II and I in nuclei. Netropsin dihydrochloride has antibacterial and antiviral activity .

HY-121309

Doxorubicinone 2 Publications Verification Adriamycin aglycone; Adriamycinone	Quinones Structural Classification Classification of Application Fields Anthraquinones Source classification Endogenous metabolite Disease Research Fields Cancer	Endogenous Metabolite
Doxorubicinone is a metabolite of an anti-cancer chemotherapy agent Doxorubicin . Doxorubicin is a potent human *DNA topoisomerase* I and topoisomerase II inhibitor with IC₅₀**s of 0.8 μM and 2.67 μM, respectively.

HY-119458

Luotonin A	Structural Classification Alkaloids Peganum nigellastrum Bunge Zygophyllaceae Source classification Quinoline Alkaloids Plants	Topoisomerase TMV Fungal
Luotonin A is an antiviral and antiphytopathogenic fungus agent. Luotonin A has good antiviral activity against tobacco mosaic virus (TMV). Luotonin A also has certain inhibitory activity on topoisomerase I and topoisomerase II. Luotonin A shows antitumor activity .

HY-15552

Podofilox 3 Publications Verification Podophyllotoxin	Structural Classification Classification of Application Fields Source classification Lignans Dysosma versipellis (Hance) M. Cheng ex Ying Phenylpropanoids Plants Berberidaceae Disease Research Fields Cancer	Microtubule/Tubulin
Podofilox (Podophyllotoxin) is a potent inhibitor of microtubule assembly and DNA topoisomerase II.

HY-13768A

Topotecan hydrochloride 30+ Cited Publications SKF 104864A hydrochloride; NSC 609669 hydrochloride	Alkaloids Structural Classification Monophenols Classification of Application Fields Source classification Phenols Quinoline Alkaloids Camptotheca acuminata Decne. Plants Nyssaceae Disease Research Fields Cancer	Topoisomerase Autophagy Apoptosis
Topotecan Hydrochloride (SKF 104864A Hydrochloride) is a Topoisomerase I inhibitor with potent antineoplastic activities.

HY-N10115

Huanglongmycin N	Quinones Structural Classification Microorganisms Classification of Application Fields Anthraquinones Source classification Phenols Polyphenols Disease Research Fields Cancer	Topoisomerase
Huanglongmycin N is a *DNA topoisomerase* I inhibitor (EC₅₀** = 14 μM).

HY-N6714

Alternariol	Infection Structural Classification Microorganisms Classification of Application Fields Source classification Phenols Polyphenols Disease Research Fields	Topoisomerase Androgen Receptor Estrogen Receptor/ERR Apoptosis
Alternariol is an orally ingested mycotoxin produced by Alternaria, capable of inhibiting the activity of topoisomerase I and II (topoisomerase I, topoisomerase II). Alternariol has weak estrogenic (Estrogen Receptor/ERR) and androgen/antiandrogen (Androgen Receptor) effects. Alternariol can induce apoptosis, trigger cell cycle arrest, suppress innate immune responses, and exhibit anti-tumor activity. Alternariol has genotoxic, mutagenic, and endocrine-disrupting effects .

HY-N8473

Pericosine A (+)-Pericosine A	Structural Classification Natural Products Microorganisms Source classification	Topoisomerase
Pericosine A ((+)-Pericosine A) is a topoisomerase II (Topoisomerase II) inhibitor that can be isolated from the Periconia byssoides strain. Pericosine A has significant antitumor activity in vitro and in vivo and can be used in cancer research. Pericosine A also inhibits the protein kinase epidermal growth factor receptor .

HY-15753

Ellipticine 3 Publications Verification NSC 71795	Apocynaceae Alkaloids Structural Classification Classification of Application Fields Source classification Plants Amsonia elliptica (Thunberg ex Murray) Roemer & Schultes Disease Research Fields Indole Alkaloids Cancer	Topoisomerase
Ellipticine (NSC 71795) is a potent antineoplastic agent; inhibits *DNA topoisomerase* II** activities.

HY-15753A

Ellipticine hydrochloride 3 Publications Verification NSC 71795 hydrochloride	Apocynaceae Alkaloids Structural Classification Classification of Application Fields Source classification Plants Amsonia elliptica (Thunberg ex Murray) Roemer & Schultes Disease Research Fields Indole Alkaloids Cancer	Topoisomerase
Ellipticine (NSC 71795) hydrochloride is a potent antineoplastic agent; inhibits *DNA topoisomerase* II** activities.

HY-N11698

Bakuchicin Allopsoralen	Structural Classification Leguminosae Source classification Coumarins Phenylpropanoids Psoralea corylifolia L. Plants	Topoisomerase
Bakuchicin (Allopsoralen) is a compound that can be found in Psoralea corylifolia. It has certain inhibitory activity against topoisomerase II. In the cell model infected with Simian virus 40 (SV40), the IC₅₀ of Bakuchicin against topoisomerase II is 404 μM. Bakuchicin can be used in the research of the anti-infection field .

HY-106702A

Fostriecin PD 110161; CL 1565A; CI-920	Structural Classification Microorganisms Antibiotics Source classification Other Antibiotics	Antibiotic Bacterial Topoisomerase Phosphatase
Fostriecin is a triene antibiotic. Fostriecin is a topoisomerase II and protein phosphatase PP2A inhibitor .

HY-N6714R

Alternariol (Standard)	Structural Classification Microorganisms Source classification Phenols Polyphenols	Reference Standards Topoisomerase Androgen Receptor Estrogen Receptor/ERR Apoptosis
Alternariol (Standard) is the analytical standard of Alternariol. This product is intended for research and analytical applications. Alternariol is an orally ingested mycotoxin produced by Alternaria, capable of inhibiting the activity of topoisomerase I and II (topoisomerase I, topoisomerase II). Alternariol has weak estrogenic (Estrogen Receptor/ERR) and androgen/antiandrogen (Androgen Receptor) effects. Alternariol can induce apoptosis, trigger cell cycle arrest, suppress innate immune responses, and exhibit anti-tumor activity. Alternariol has genotoxic, mutagenic, and endocrine-disrupting effects .

HY-N2331

Proscillaridin A 1 Publications Verification	Apocynaceae Structural Classification Classification of Application Fields Source classification Nerium indicum Mill. Plants Disease Research Fields Steroids Cancer	Topoisomerase
Proscillaridin A is a potent poison of topoisomerase I/II activity with IC₅₀ values of 30 nM and 100 nM, respectively .

HY-16562A

Irinotecan hydrochloride 50+ Cited Publications (+)-Irinotecan hydrochloride; CPT-11 hydrochloride; VAL-413	Alkaloids Structural Classification Classification of Application Fields Source classification Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants Disease Research Fields Cancer	Topoisomerase Autophagy
Irinotecan hydrochloride ((+)-Irinotecan hydrochloride) is a topoisomerase I inhibitor mainly used to treat colon cancer and rectal cancer .

HY-121309R

Doxorubicinone (Standard) Adriamycin aglycone (Standard); Adriamycinone (Standard)	Quinones Structural Classification Anthraquinones Source classification Endogenous metabolite	Reference Standards Endogenous Metabolite
Doxorubicinone (Standard) is the analytical standard of Doxorubicinone. This product is intended for research and analytical applications. Doxorubicinone is a metabolite of an anti-cancer chemotherapy agent Doxorubicin . Doxorubicin is a potent human DNA topoisomerase I and topoisomerase II inhibitor with IC50s of 0.8 μM and 2.67 μM, respectively.

HY-100309

9-Aminocamptothecin 1 Publications Verification 9-Amino-20(S)-camptothecin; 9-Amino-CPT	Alkaloids Structural Classification Classification of Application Fields Source classification Camptotheca acuminata Decne. Nyssaceae Plants Disease Research Fields Indole Alkaloids Cancer	Topoisomerase
9-Aminocamptothecin (9-Amino-CPT) is a topoisomerase I inhibitor with potent anticancer activity .

HY-N0275

(±)-10-Hydroxycamptothecin (±)-10-HCPT	Structural Classification Pyrrole Alkaloids Classification of Application Fields Source classification Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants Alkaloids Monophenols Phenols Disease Research Fields Cancer	Topoisomerase
(±)-10-Hydroxycamptothecin is an indole alkaloid that inhibits the activity of topoisomerase I and has a broad spectrum of anticancer activity.

HY-N5038

Mauritianin	Flavonols Classification of Application Fields Source classification Erythrina stricta Roxb. Plants Compositae Acalypha indica Linn. Flavonoids Phenols Polyphenols Euphorbiaceae Disease Research Fields Cancer	Topoisomerase
Mauritianin is a kaempferol glycoside isolated from the flowers and leaves of Acalypha indica. Mauritianin is a topoisomerase I inhibitor .

HY-W897655

20-O-Acetylcamptothecin O-Acetylcamptothecin	Structural Classification Alkaloids Source classification Camptotheca acuminata Decne. Nyssaceae Plants Isoquinoline Alkaloids	Topoisomerase
20-O-Acetylcamptothecin (O-Acetylcamptothecin) is a derivative of Camptothecin (HY-16560) and an inhibitor of *Topoisomerase* I .

HY-N12747

Dichlorogelignate	Structural Classification Source classification Phenols Polyphenols Plants Boraginaceae Arnebia euchroma (Royle) Johnst.	Topoisomerase
Dichlorogelignate (compound 4) is a selective inhibitor of topoisomerase II (Topo II). Dichlorogelignate has 100% inhibition at 50 μM .

HY-15142

Doxorubicin hydrochloride Maximum Cited Publications 519 Publications Verification Hydroxydaunorubicin hydrochloride; ADR	Infection Quinones Structural Classification Microorganisms Classification of Application Fields Anthraquinones Source classification Disease Research Fields	Topoisomerase ADC Payload AMPK Autophagy Apoptosis HIV HBV Mitophagy Antibiotic Bacterial
Doxorubicin hydrochloride (Hydroxydaunorubicin hydrochloride; ADR), a cytotoxic anthracycline antibiotic, is an anti-cancer chemotherapy agent. Doxorubicin hydrochloride is a potent human *DNA topoisomerase* I** and topoisomerase II inhibitor with IC₅₀s of 0.8 μM and 2.67 μM, respectively. Doxorubicin hydrochloride reduces basal phosphorylation of AMPK and its downstream target acetyl-CoA carboxylase. Doxorubicin hydrochloride induces apoptosis and autophagy .

HY-18258

Berberine chloride 50+ Cited Publications Natural Yellow 18 chloride	Alkaloids Structural Classification Phellodendron amurense Rupr. Classification of Application Fields Source classification Rutaceae Plants Isoquinoline Alkaloids Disease Research Fields Biological Pesticide Research Cancer Agricultural Research	Topoisomerase Autophagy Bacterial Reactive Oxygen Species (ROS) Antibiotic Endogenous Metabolite Parasite
Berberine chloride is an alkaloid that acts as an antibiotic. Berberine chloride induces reactive oxygen species (ROS) generation and inhibits DNA topoisomerase. Antineoplastic properties .

HY-15552R

Podofilox (Standard) Podophyllotoxin (Standard)	Structural Classification Source classification Lignans Dysosma versipellis (Hance) M. Cheng ex Ying Phenylpropanoids Plants Berberidaceae	Reference Standards Microtubule/Tubulin
Podofilox (Standard) is the analytical standard of Podofilox. This product is intended for research and analytical applications. Podofilox (Podophyllotoxin) is a potent inhibitor of microtubule assembly and DNA topoisomerase II.

HY-13768AR

Topotecan hydrochloride (Standard) SKF 104864A hydrochloride (Standard); NSC 609669 hydrochloride (Standard)	Alkaloids Structural Classification Monophenols Source classification Phenols Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants	Reference Standards Topoisomerase Autophagy Apoptosis
Topotecan (hydrochloride) (Standard) is the analytical standard of Topotecan (hydrochloride). This product is intended for research and analytical applications. Topotecan Hydrochloride (SKF 104864A Hydrochloride) is a Topoisomerase I inhibitor with potent antineoplastic activities.

HY-17577

Berberine chloride hydrate 50+ Cited Publications Natural Yellow 18 chloride hydrate	Alkaloids Structural Classification Classification of Application Fields Coptis chinensis Franch. Ranunculaceae Source classification Plants Isoquinoline Alkaloids Disease Research Fields Cancer	Topoisomerase Autophagy Bacterial Reactive Oxygen Species (ROS) Antibiotic Endogenous Metabolite Parasite
Berberine chloride hydrate (Natural Yellow 18 chloride hydrate) is an alkaloid that acts as an antibiotic. Berberine chloride hydrate induces reactive oxygen species (ROS) generation and inhibits DNA topoisomerase. Antineoplastic properties .

HY-N8745

α-Peltatin	Structural Classification Podophyllum peltatum L. Source classification Lignans Phenylpropanoids Plants Berberidaceae	Fungal
α-Peltatin is an aryl lignan. α-Peltatin has anticancer and antifungal activity. α-Peltatin inhibits DNA topoisomerase and tubulin polymerization .

HY-15753R

Ellipticine (Standard)	Apocynaceae Alkaloids Structural Classification Marine natural products Source classification Plants Amsonia elliptica (Thunberg ex Murray) Roemer & Schultes Indole Alkaloids	Topoisomerase
Ellipticine (Standard) is the analytical standard of Ellipticine. This product is intended for research and analytical applications. Ellipticine (NSC 71795) is a potent antineoplastic agent; inhibits DNA topoisomerase II activities.

HY-15753AR

Ellipticine hydrochloride (Standard)	Apocynaceae Alkaloids Structural Classification Source classification Plants Amsonia elliptica (Thunberg ex Murray) Roemer & Schultes Indole Alkaloids	Topoisomerase
Ellipticine (hydrochloride) (Standard) is the analytical standard of Ellipticine (hydrochloride). This product is intended for research and analytical applications. Ellipticine (NSC 71795) hydrochloride is a potent antineoplastic agent; inhibits DNA topoisomerase II activities.

HY-15142A

Doxorubicin Hydroxydaunorubicin	Infection Quinones Structural Classification Microorganisms Classification of Application Fields Anthraquinones Source classification Phenols Polyphenols Disease Research Fields	ADC Payload Antibiotic Bacterial Topoisomerase AMPK HIV Autophagy Mitophagy Apoptosis HBV
Doxorubicin (Hydroxydaunorubicin), a broad-spectrum anthracycline antibiotic with cytotoxic properties, is an anti-cancer chemotherapy agent. Doxorubicin has fluorescence properties. Doxorubicin inhibits topoisomerase II with an IC₅₀ of 2.67 μM, thus stopping DNA replication. Doxorubicin reduces basal phosphorylation of AMPK and its downstream target acetyl-CoA carboxylase. Doxorubicin induces apoptosis and autophagy . Doxorubicin inhibits human *DNA topoisomerase* I with an IC₅₀** of 0.8 μM .

Cat. No.	Product Name	Chemical Structure

HY-16562S1

Irinotecan-d10 hydrochloride
Irinotecan-d₁₀ (hydrochloride) is the deuterium labeled Irinotecan. Irinotecan ((+)-Irinotecan) is a topoisomerase I inhibitor, preventing religation of the DNA strand by binding to topoisomerase I-DNA complex .

HY-16562S

Irinotecan-d10
Irinotecan-d₁₀ is a deuterium labeled Irinotecan ((+)-Irinotecan). Irinotecan ((+)-Irinotecan) is a topoisomerase I inhibitor, preventing religation of the DNA strand by binding to topoisomerase I-DNA complex .

HY-13566AS

Belotecan-d7 hydrochloride
Belotecan-d₇ (hydrochloride) is the deuterium labeled Belotecan hydrochloride. Belotecan hydrochloride (CKD-602 hydrochloride), a Topoisomerase I inhibitor, is a synthetic camptothecin derivative .

HY-121309S

Doxorubicinone-d3
Doxorubicinone-d₃ is the deuterium labeled Doxorubicinone. Doxorubicinone is a metabolite of an anti-cancer chemotherapy agent Doxorubicin . Doxorubicin is a potent human?DNA topoisomerase I?and?topoisomerase II?inhibitor with?IC₅₀s of 0.8 μM and 2.67 μM, respectively.

HY-W653896

Alternariol-d2

Alternariol-d₂ is deuterium labeled Alternariol. Alternariol is an orally ingested mycotoxin produced by Alternaria, capable of inhibiting the activity of topoisomerase I and II (topoisomerase I, topoisomerase II). Alternariol has weak estrogenic (Estrogen Receptor/ERR) and androgen/antiandrogen (Androgen Receptor) effects. Alternariol can induce apoptosis, trigger cell cycle arrest, suppress innate immune responses, and exhibit anti-tumor activity. Alternariol has genotoxic, mutagenic, and endocrine-disrupting effects .

HY-121309S1

Doxorubicinone-13C,d3
Doxorubicinone- ¹³C,d₃ (Adriamycin aglycone- ¹³C,d₃) is ¹³C labeled Doxorubicinone. Doxorubicinone is a metabolite of an anti-cancer chemotherapy agent Doxorubicin . Doxorubicin is a potent human *DNA topoisomerase* I** and topoisomerase II inhibitor with IC₅₀s of 0.8 μM and 2.67 μM, respectively.

HY-15552S

Podofilox-d6
Podofilox-d₆ is the deuterium labeled Podofilox. Podofilox (Podophyllotoxin) is a potent inhibitor of microtubule assembly and DNA topoisomerase II .

HY-10581AS

Gatifloxacin-d3 hydrochloride

Gatifloxacin-d₃ (hydrochloride) is the deuterium labeled Gatifloxacin (hydrochloride). Gatifloxacin hydrochloride (AM-1155; BMS-206584; PD135432) is a potent fluoroquinolone antibiotic with broad-spectrum antibacterial activity. Gatifloxacin hydrochloride inhibits bacterial type II topoisomerases (IC50=13.8 μg/ml for S. aureus topoisomerase IV) and E. coli DNA gyrase (IC50 = 0.109 μg/ml). Gatifloxacin hydrochloride can be used to treat bacterial conjunctivitis in vivo.

HY-16562AS

Irinotecan-d5 hydrochloride
Irinotecan-d₅ hydrochloride is deuterated labeled Irinotecan hydrochloride (HY-16562A). Irinotecan hydrochloride ((+)-Irinotecan hydrochloride) is a topoisomerase I inhibitor mainly used to treat colon cancer and rectal cancer .

HY-18258S

Berberine-d6 chloride
Berberine-d₆ (chloride) is the deuterium labeled Berberine chloride. Berberine chloride is an alkaloid that acts as an antibiotic. Berberine chloride induces reactive oxygen species (ROS) generation and inhibits DNA topoisomerase. Antineoplastic properties .

HY-13562S

Banoxantrone-d12
Banoxantrone-d₁₂ is the deuterium labeled banoxantrone. Banoxantrone is a novel bioreductive agent that can be reduced to a stable, DNA-affinic compound AQ4, which is a potent topoisomerase II inhibitor.

HY-13562AS

Banoxantrone-d12 dihydrochloride
Banoxantrone-d₁₂ (dihydrochloride) is the deuterium labeled Banoxantrone dihydrochloride. Banoxantrone is a novel bioreductive agent that can be reduced to a stable, DNA-affinic compound AQ4, which is a potent topoisomerase II inhibitor.

HY-B0526S

Flumequine-13C3
Flumequine- ¹³C₃ is the ¹³C₃ labeled Flumequine. Flumequine (R-802) is a quinolone antibiotic, and acts as a topoisomerase II inhibitor, with an IC50 of 15 μM (3.92 μg/mL).

HY-13502S

Mitoxantrone-d8
Mitoxantrone-d₈ (mitozantrone-d₈) is the deuterium labeled Mitoxantrone. Mitoxantrone is a topoisomerase II inhibitor and also inhibits protein kinase C (PKC) activity with an IC₅₀ of 8.5 μM .

HY-13631AS1

Exatecan-d3 mesylate
Exatecan-d₃ (DX8951f-d₃) mesylate is deuterium-labeled Exatecan mesylate (HY-13631A). Exatecan mesylate is a DNA topoisomerase I inhibitor, with an IC₅₀ of 0.975 μg/mL .

HY-13631DS

Dxd-d5
Dxd-d₅ is a deuterium labeled Dxd. Dxd is a potent DNA topoisomerase I inhibitor, with an IC₅₀ of 0.31 μM, used as a conjugated drug of HER2-targeting ADC (DS-8201a) .

HY-13631AS

Exatecan-d5 mesylate
Exatecan-d₅ (DX8951f-d₅) mesylate is deuterium labeled Exatecan mesylate (HY-13631A). Exatecan mesylate is a *DNA topoisomerase* I inhibitor, with an IC₅₀** of 2.2 μM (0.975 μg/mL). Exatecan mesylate can be used in cancer research .

HY-126373S1

SN-38 glucuronide-13C6
SN-38 glucuronide- ¹³C₆ is the ¹³C labeled SN-38 glucuronide (HY-126373) . SN-38 glucuronide is an inactive metabolite of the cancer agent Irinotecan. Irinotecan is a topoisomerase I inhibitor which can be used for researching colon and rectal cancer .

HY-13629S1

Etoposide-13C,d3
Etoposide- ¹³C,d₃ is the ¹³C- and deuterium labeled Etoposide. Etoposide (VP-16; VP-16-213) is an anti-cancer chemotherapy agent. Etoposide inhibits topoisomerase II, thus stopping DNA replication. Etoposide induces cell cycle arrest, apoptosis and autophagy .

HY-13629S

Etoposide-d3
Etoposide-d3 (VP-16-d3) is the deuterium labeled Etoposide (HY-13629). Etoposide (VP-16) is an anti-cancer chemotherapy agent. Etoposide inhibits topoisomerase II, thus stopping DNA replication. Etoposide induces cell cycle arrest, apoptosis and autophagy .

HY-W744739

Betulinic acid-d3
Betulinic acid-d₃ (Lupatic acid-d₃) is a deuterium labeled Betulinic acid (HY-10529). Betulinic acid is a natural pentacyclic triterpenoid, acts as a eukaryotic topoisomerase I inhibitor, with an IC₅₀ of 5 μM, and possesses anti-HIV, anti-malarial, anti-inflammatory and anti-tumor properties .

HY-B0398S

Nalidixic Acid-d5

Nalidixic Acid-d₅ is the deuterium labeled Nalidixic acid. Nalidixic acid, a quinolone antibiotic, is effective against both gram-positive and gram-negative bacteria. Nalidixic acid acts in a bacteriostatic manner in lower concentrations and is bactericidal in higher concentrations. Nalidixic acid inhibits a subunit of DNA gyrase and topoisomerase IV and reversibly blocks DNA replication in susceptible bacteria .

HY-13704S

SN-38-d3
SN-38-d₃ is the deuterium labeled SN-38. SN-38 (NK012) is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 (NK012) inhibits DNA and RNA synthesis with IC₅₀s of 0.077 and 1.3 μM, respectively .

HY-145397S

(4-NH2)-Exatecan-d5
(4-NH2)-Exatecan-d5 is a deuterated labeled (4-NH2)-Exatecan . (4-NH2)-Exatecan (compound A), a *topoisomerase* inhibitor, is a derivative of Exatecan. (4-NH2)-Exatecan can be used in the synthesis of antibody-drug conjugates (ADCs) .

HY-W653919

SN-38 glucuronide-d3
SN-38 glucuronide-d₃ is deuterium labeled SN-38 glucuronide. SN-38 glucuronide is an inactive metabolite of the anticancer active molecule Irinotecan (HY-16562) and has toxic effects on the gastrointestinal tract. Irinotecan is a topoisomerase I inhibitor which can be used for researching colon and rectal cancer .

HY-132561S

RPR121056-d3
RPR121056-d₃ is the deuterium labeled RPR121056. RPR121056 is a metabolite of Irinotecan (HY-16562), which is generated by CYP3A4. Irinotecan (CPT-11) is an antineoplastic agent that inhibits topoisomerase type I, causing cell death, and is widely used in the treatment of colorectal cancer. Irinotecan also directly inhibits AChE .

HY-W744243

Etoposide-d4
Etoposide-d₄ (VP-16-d₄; VP-16-213-d₄) is the deuterium labeled Etoposide (HY-13629). Etoposide (VP-16; VP-16-213) is an anti-cancer chemotherapy agent. Etoposide inhibits topoisomerase II, thus stopping DNA replication. Etoposide induces cell cycle arrest, apoptosis and autophagy .

HY-B0330BS1

Levofloxacin-d3 hydrochloride

Levofloxacin-d₃ ((-)-Ofloxacin-d₃) hydrochlorideis deuterium labeled Levofloxacin (hydrochloride). Levofloxacin ((-)-Ofloxacin) hydrochloride is an orally active antibiotic and is active against both Gram-positive and Gram-negative bacteria. Levofloxacin hydrochloride inhibits the DNA gyrase and topoisomerase IV. Levofloxacin hydrochloride can be used for chronic periodontitis, airway inflammation and BK Viremia research. Levofloxacin hydrochloride shows anti-orthopoxvirus activity .

HY-W744235

Levofloxacin-d3 sodium

Levofloxacin-d₃ sodium is the deuterium labeled Levofloxacin sodium (HY-B0330C). Levofloxacin ((-)-Ofloxacin) sodium is an orally active antibiotic and is active against both Gram-positive and Gram-negative bacteria. Levofloxacin sodium inhibits the DNA gyrase and topoisomerase IV. Levofloxacin sodium can be used for chronic periodontitis, airway inflammation and BK Viremia research. Levofloxacin sodium shows anti-orthopoxvirus activity .

HY-13768S1

Topotecan-d6
Topotecan-d₆ is the deuterium labeled Topotecan. Topotecan (SKF 104864A; NSC 609669) is a Topoisomerase I inhibitor. The IC₅₀ values of Topotecan at 24 h are 2.73±0.25 μM of U251 cells, 2.95±0.23 μM of U87 cells, 5.46±0.41 μM of GSCs-U251 and 5.95 μM of GSCs-U87 .

HY-B0356S2

Ciprofloxacin-d4

Ciprofloxacin-d₄ (Bay-09867-d₄) is deuterium labeled Ciprofloxacin. Ciprofloxacin (Bay-09867) is a potent, orally active topoisomerase IV inhibitor. Ciprofloxacin induces mitochondrial DNA and nuclear DNA damage and lead to mitochondrial dysfunction, ROS production. Ciprofloxacin has anti-proliferative activity and induces apoptosis. Ciprofloxacin is a fluoroquinolone antibiotic, exhibiting potent antibacterial activity .

HY-B0330DS

(R)-Ofloxacin-d3

(R)-Ofloxacin-d₃ is the deuterium labeled (R)-Ofloxacin. (R)-Ofloxacin is the dextrorotatory enantiomer of Ofloxacin (HY-B0125) and is an orally effective fluoroquinolone antibiotic. (R)-Ofloxacin can inhibit the activity of bacterial DNA topoisomerase II, interfere with bacterial DNA replication and repair, and exert a bactericidal effect. (R)-Ofloxacin has a broad-spectrum antibacterial activity and has inhibitory effects on both Gram-negative and Gram-positive bacteria .

HY-W654130

Daunorubicin-13C,d3

Daunorubicin- ¹³C,d₃ is ¹³C and deuterium labeled Daunorubicin. Daunorubicin (Daunomycin) is a topoisomerase II inhibitor with potent anti-tumor activity. Daunorubicin inhibits DNA and RNA synthesis. Daunorubicin is a cytotoxin that inhibits cancer cell viability and induces apoptosis and necrosis. Daunorubicin is also an anthracycline antibiotic. Daunorubicin can be used in the research of infection and variety of cancers, including leukemia, non-Hodgkin lymphomas, Ewing's sarcoma, Wilms' tumor .

HY-16560S

Camptothecin-d5

Camptothecin-d₅ is the deuterium labeled Camptothecin. Camptothecin (CPT), a kind of alkaloid, is a DNA topoisomerase I (Topo I) inhibitor with an IC₅₀ of 679 nM . Camptothecin (CPT) exhibits powerful antineoplastic activity against colorectal, breast, lung and ovarian cancers, modulates hypoxia-inducible factor-1α (HIF-1α) activity by changing microRNAs (miRNA) expression patterns in human cancer cells .

HY-B0395DS

(1R,2S,7R)-Sitafloxacin-d4 hydrochloride
(1R,2S,7R)-Sitafloxacin-d₄ hydrochloride is deuterium labeled (1R,2S,7R)-Sitafloxacin hydrochloride (HY-B0395D). (R)-Sitafloxacin (DU-6857), a stereoisomer of Sitafloxacin (DU-6859a), is also an inhibitor of topoisomerases, with an IC₅₀ of 0.18 μg/mL of DNA gyrase .

HY-13768S

Topotecan-d5
Topotecan-d₅ is the deuterium labeled Topotecan. Topotecan (SKF 104864A; NSC 609669) is a Topoisomerase I inhibitor. The IC₅₀ values of Topotecan at 24 h are 2.73±0.25 μM of U251 cells, 2.95±0.23 μM of U87 cells, 5.46±0.41 μM of GSCs-U251 and 5.95±0.24 μM of GSCs-U87 .

HY-N0095S

(S)-10-Hydroxycamptothecin-d5
(S)-10-Hydroxycamptothecin-d₅ (10-HCPT-d₅) is the deuterium labeled (S)-10-Hydroxycamptothecin. (S)-10-Hydroxycamptothecin (10-HCPT) is a DNA topoisomerase I inhibitor. (S)-10-Hydroxycamptothecin exhibits a remarkable apoptosis-inducing effect. (S)-10-Hydroxycamptothecin has the potential for hepatoma, gastric carcinoma, colon cancer and leukaemia research .

HY-13502AS

Mitoxantrone-d8 dihydrochloride

Mitoxantrone-d₈ dihydrochloride is deuterated labeled Mitoxantrone dihydrochloride (HY-13502A). Mitoxantrone dihydrochloride is a potent topoisomerase II inhibitor. Mitoxantrone dihydrochloride also inhibits protein kinase C (PKC) activity with an IC₅₀ of 8.5 μM. Mitoxantrone dihydrochloride induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone dihydrochloride shows antitumor activity . Mitoxantrone dihydrochloride also has anti-orthopoxvirus activity with EC₅₀s of 0.25 μM and and 0.8 μM for cowpox and monkeypox, respectively .

HY-13502AS1

Mitoxantrone-d8 hydrochloride

Mitoxantrone-d₈ (hydrochloride) (Mitozantrone-d₈ (hydrochloride)) is deuterium labeled Mitoxantrone (dihydrochloride). Mitoxantrone dihydrochloride is a potent topoisomerase II inhibitor. Mitoxantrone dihydrochloride also inhibits protein kinase C (PKC) activity with an IC₅₀ of 8.5 μM. Mitoxantrone dihydrochloride induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone dihydrochloride shows antitumor activity . Mitoxantrone dihydrochloride also has anti-orthopoxvirus activity with EC₅₀s of 0.25 μM and and 0.8 μM for cowpox and monkeypox, respectively .

HY-B0268S2

Enoxacin-d8 hydrate

Enoxacin-d₈ (hydrate) is deuterium labeled Enoxacin. Enoxacin (AT 2266), a fluoroquinolone, interferes with DNA replication and inhibits bacterial DNA gyrase (IC₅₀=126 μg/ml) and topoisomerase IV (IC₅₀=26.5 μg/ml). Enoxacin is a miRNA processing activator and enhances siRNA-mediated mRNA degradation and promotes the biogenesis of endogenous miRNAs. Enoxacin has potent activities against gram-positive and -negative bacteria. Enoxacin is a cancer-specific growth inhibitor that acts by enhancing TAR RNA-binding protein 2 (TRBP)-mediated microRNA processing .

HY-B0268S1

Enoxacin-d8 hydrochloride

Enoxacin-d₈ (hydrochloride) is deuterium labeled Enoxacin. Enoxacin (AT 2266), a fluoroquinolone, interferes with DNA replication and inhibits bacterial DNA gyrase (IC₅₀=126 μg/ml) and topoisomerase IV (IC₅₀=26.5 μg/ml). Enoxacin is a miRNA processing activator and enhances siRNA-mediated mRNA degradation and promotes the biogenesis of endogenous miRNAs. Enoxacin has potent activities against gram-positive and -negative bacteria. Enoxacin is a cancer-specific growth inhibitor that acts by enhancing TAR RNA-binding protein 2 (TRBP)-mediated microRNA processing .

HY-B0147S

Pefloxacin-d5

Pefloxacin-d₅ is the deuterium labeled Pefloxacin (HY-B0147). Pefloxacin is a broad spectrum antibiotic. Pefloxacin blocks DNA replication by inhibiting DNA gyrase. Pefloxacin inhibits DNA relaxation catalyzed by topoisomerase I with an IC₅₀ of 45 μg/mL. Pefloxacin exhibits antibacterial activity against Escherichia coli, Pseudomonas aeruginosa, and Bacteroides fragilis with MIC90s of 0.12, 4, and 16 mg/L, respectively. Pefloxacin has anti-Plasmodium yoelii infection activity. Pefloxacin increase UVA-induced edema and immunesuppression. Pefloxacin can be used for infection studies .

HY-B0506S1

Nadifloxacin-d5

Nadifloxacin-d₅ (OPC7251-d₅) is deuterium labeled Nadifloxacin (HY-B0506). Nadifloxacin (OPC7251) is a broad-spectrum quinolone antibiotic. Nadifloxacin inhibits bacterial DNA gyrase and topoisomerase IV, interfering with DNA replication. It also suppresses the production of proinflammatory cytokines (such as IL-1α, IL-6, and IL-8). Nadifloxacin exhibits antibacterial activity against various pathogens, including Propionibacterium acnes and Staphylococcus aureus. Nadifloxacin also exhibits anti-inflammatory activity. Nadifloxacin can be used in the research of skin infections such as acne vulgaris, folliculitis, and impetigo .

Cat. No.	Product Name		Classification

HY-164792

DBCO-PEG3-VC-Exatecan		DBCO
DBCO-PEG3-VC-Exatecan (compound 25) is a Drug-Linker Conjugate for ADC. DBCO-PEG3-VC-Exatecan contains the ADC linker (DBCO-PEG3-VC) and a *DNA topoisomerase* I** inhibitor Exatecan (HY-13631) .

HY-134723

DBCO-PEG4-GGFG-Dxd		ADC Synthesis DBCO
DBCO-PEG4-GGFG-Dxd is a agent-linker conjugate for ADC with potent antitumor activity by using Dxd (a DNA topoisomerase I inhibitor), linked via the cleavable ADC linker DBCO-PEG4-GGFG . DBCO-PEG4-GGFG-Dxd is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-163099

P5(PEG24)-VC-PAB-Exatecan		Alkynes
P5(PEG24)-VC-PAB-Exatecan (LP5) is a drug-linker conjugate composed of a potent a DNA Topoisomerase I inhibitor Exatecan (HY-13631) and a linker P5(PEG24)-VC-PAB to make antibody agent conjugate (ADC). P5(PEG24)-VC-PAB-Exatecan can be used for the research of tumor .

HY-173625

P5(PEG12)-VC-PAB-Exatecan		Alkynes
P5(PEG12)-VC-PAB-Exatecan (LP3) is a drug-linker conjugate composed of a potent a DNA Topoisomerase I inhibitor Exatecan (HY-13631) and a linker P5(PEG24)-VC-PAB to make antibody agent conjugate (ADC). P5(PEG12)-VC-PAB-Exatecan can be used for the research of tumor .

Cat. No.	Product Name		Classification

HY-W010800

Cholesteryl hemisuccinate		Cholesterol
Cholesteryl hemisuccinate is a with hepatoprotective an anticancer activity. Cholesteryl hemisuccinate inhibits Acetaminophen (AAP, HY-66005) hepatotoxicity, and prevents AAP-induced hepatic apoptosis and necrosis. Cholesteryl hemisuccinate inhibits DNA polymerase and DNA topoisomerase to inhibit DNA replication and repair and cell division. Thus, Cholesteryl hemisuccinate inhibits tumor growth .

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