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Pathways Recommended:	Cell Cycle/DNA Damage

Results for "

DNA topoisomerase I inhibitor

" in MedChemExpress (MCE) Product Catalog:

By Targets:	DNA-PK (1) DNA/RNA Synthesis (9) Topoisomerase (115) ADC Antibody (1) ADC Payload (38) AMPK (3) Antibiotic (10) Antibody-Drug Conjugates (ADCs) (2) Apoptosis (24) ATM/ATR (1) Autophagy (10) Bacterial (7) Bcl-2 Family (1) Caspase (3) Cuproptosis (1) Drug Intermediate (2) Drug Metabolite (2) Drug-Linker Conjugates for ADC (26) Endogenous Metabolite (5) Fungal (5) HBV (3) Histone Methyltransferase (1) HIV (3) IAP (1) Influenza Virus (3) Isotope-Labeled Compounds (7) MicroRNA (3) Microtubule/Tubulin (2) Mitochondrial Metabolism (2) Mitophagy (3) Mixed Lineage Kinase (1) Necroptosis (1) NF-κB (3) NO Synthase (1) Parasite (3) PARP (1) Reactive Oxygen Species (ROS) (2) Reference Standards (9) RIP kinase (1) Survivin (1) TROP2 (1)
By Research Areas:	Cancer (130) Infection (15) Inflammation/Immunology (4)
Click Chemistry:	ADC Synthesis (1) DBCO (2) Alkynes (2)

137

Inhibitors & Agonists

Fluorescent Dye

Biochemical Assay Reagents

Inhibitory Antibodies

Natural
Products

Isotope-Labeled Compounds

Click Chemistry

Targets Recommended: Topoisomerase DNA-PK DNA Glycosylase DNA Methyltransferase DNA Stain DNA Alkylator/Crosslinker DNA/RNA Synthesis

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

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-16562

Irinotecan 50+ Cited Publications (+)-Irinotecan; CPT-11; VAL-413(free base)	Topoisomerase Autophagy	Cancer
Irinotecan ((+)-Irinotecan) is a topoisomerase I inhibitor, preventing religation of the DNA strand by binding to topoisomerase I-DNA complex .

HY-159783

Mal-Exatecan	ADC Payload Topoisomerase	Cancer
Mal-Exatecan is a Mal (Maleimide) modified Exatecan (HY-13631), a DNA topoisomerase I (topoisomerase I) inhibitor .

HY-16562S1

Irinotecan-d10 hydrochloride	Isotope-Labeled Compounds Topoisomerase Autophagy	Cancer
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; CPT-11-d₁₀; VAL-413-d₁₀	Topoisomerase Autophagy	Cancer
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-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-156723

9-Chloromethyl-10-hydroxy-11-F-Camptothecin	Topoisomerase	Cancer
9-Chloromethyl-10-hydroxy-11-F-Camptothecin is a novel camptothecin derivatives. 9-Chloromethyl-10-hydroxy-11-F-Camptothecin is a DNA topoisomerase I (Topo I) inhibitor, can be used in anticancer 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-143266

Topoisomerase I inhibitor 3	Topoisomerase Apoptosis	Cancer
Topoisomerase I inhibitor 3 (Compound ZML-14) is a topoisomerase I inhibitor and can interact with topoisomerase I-DNA complex. Topoisomerase I inhibitor 3 induces HepG2 cell apoptosis and arrests cell cycle at G2/M phase .

HY-144774

Topoisomerase I inhibitor 5	Topoisomerase DNA/RNA Synthesis Apoptosis	Cancer
Topoisomerase I inhibitor 5 is an effective *topoisomerase* inhibitor with IC₅₀ value of. Topoisomerase I inhibitor 5 can interfere with DNA and significantly inhibit the activity of Topoisomerase I. Topoisomerase I inhibitor 5 can arrest cell cycle at the G1 phase and induce MCF-7 cells apoptosis. Topoisomerase I inhibitor 5 has potency in reversing P-gp-mediated resistance to Adriamycin .

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-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-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-16562R

Irinotecan (Standard) (+)-Irinotecan (Standard); CPT-11 (Standard); VAL-413(free base) (Standard)	Reference Standards Topoisomerase Autophagy	Cancer
Irinotecan (Standard) is the analytical standard of Irinotecan. This product is intended for research and analytical applications. Irinotecan ((+)-Irinotecan) is a topoisomerase I inhibitor, preventing religation of the DNA strand by binding to topoisomerase I-DNA complex .

HY-119892

Batracylin NSC 320846; BAY-H 2049	Topoisomerase	Cancer
Batracylin (NSC320846) is a potent DNA Topoisomerases I and DNA Topoisomerases II inhibitor. Batracylin shows cytotoxicity and antiproliferative activity. Batracylin induces DNA breaks .

HY-161385

Topoisomerase I inhibitor 16	Topoisomerase	Cancer
Topoisomerase I inhibitor 21 (Compound 3e) is an inhibitor for Topoisomerase I through stabilization of enzyme-DNA complex. Topoisomerase I inhibitor 21 exhibits antiproliferative activity in 39 human cancer cells (JFCR39) with mean GI₅₀ 39 nM .

HY-N10115

Huanglongmycin N	Topoisomerase	Cancer
Huanglongmycin N is a DNA topoisomerase I inhibitor (EC₅₀ = 14 μM).

HY-19825

Rebeccamycin	Topoisomerase ADC Payload Antibiotic	Cancer
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-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-143402

Topoisomerase I/II inhibitor 2	Topoisomerase	Cancer
Topoisomerase I/II inhibitor 2 (compound 1a) is a potent *Topoisomerase* inhibitor (IC₅₀= 9.82 μM on Huh7 cells and 6.83 μM on LM9 cells). Topoisomerase I/II inhibitor 2 has dual inhibition on DNA topoisomerase I/II, also can obviously reduce the growth of xenograft tumor in mice model. Topoisomerase I/II inhibitor 2 has the potential value in researching liver cancer .

HY-100777

DACA	Topoisomerase	Cancer
DACA inhibits two essential nuclear enzymes in vitro, DNA topoisomerase I and DNA topoisomerase (topo) II. DACA stabilises topo I, topo II alpha, and topo II beta cleavable complexes in human leukaemia CCRF-CEM cells .

HY-120185

Saintopin UCT-1003	Topoisomerase	Infection Cancer
Saintopin is an antitumor antibiotic. Saintopin is also an inhibitor of DNA topoisomerases I and II. Saintopin induces DNA cleavage .

HY-13758

TAS-103 BMS-247615	Topoisomerase	Cancer
TAS-103 is a dual inhibitor of DNA **topoisomerase I/II**, used for cancer research.

HY-13758A

TAS-103 dihydrochloride 1 Publications Verification BMS-247615 dihydrochloride	Topoisomerase	Cancer
TAS-103 dihydrochloride is a dual inhibitor of DNA **topoisomerase I/II**, used for cancer research.

HY-168739

Topoisomerase I inhibitor 17	Topoisomerase Reactive Oxygen Species (ROS) Apoptosis Survivin Bcl-2 Family IAP DNA/RNA Synthesis	Cancer
Topoisomerase I inhibitor 17 (Compound 7h) is a Topoisomerase I (Top1) inhibitor. Topoisomerase I inhibitor 17 reduces DDX5 and reverses the locking of Top1 activity by DDX5. Topoisomerase I inhibitor 17 induces Top1-mediated DNA damage and promotes reactive oxygen species (ROS) production. Topoisomerase I inhibitor 17 induces Apoptosis (reduces antiapoptotic proteins XIAP, Bcl-2, Survivin and up-regulates pro-apoptotic proteins Bax, γH2AX). Topoisomerase I inhibitor 17 also blocks the progression of the G2/M checkpoint and induces cell cycle arrest. Topoisomerase I inhibitor 17 significantly inhibits colony formation and cell migration in colorectal cancer cells. Topoisomerase I inhibitor 17 effectively reduces tumors in human PDX tumor mice .

HY-13618

Edotecarin J 107088; PF 804950	Topoisomerase	Cancer
Edotecarin is a potent inhibitor of topoisomerase I that can induces single-strand DNA cleavage, with IC₅₀ of 50 nM.

HY-13565

Becatecarin NSC 655649; BMS 181176; BMY 27557	Topoisomerase	Cancer
Becatecarin is a rebeccamycin analog with antitumor effects. Becatecarin intercalates into DNA and inhibites the catalytic activity of **topoisomerases I/II**.

HY-100777R

DACA (Standard)	Topoisomerase Reference Standards	Cancer
DACA (Standard) is the analytical standard of DACA. This product is intended for research and analytical applications. DACA inhibits two essential nuclear enzymes in vitro, DNA topoisomerase I and DNA topoisomerase (topo) II. DACA stabilises topo I, topo II alpha, and topo II beta cleavable complexes in human leukaemia CCRF-CEM cells .

HY-U00248

LMP744 MJ-III65; NSC706744	Topoisomerase	Cancer
LMP744 (MJ-III65) is a DNA intercalator and Topoisomerase I (Top1) inhibitor with antitumor activity .

HY-U00248A

LMP744 hydrochloride MJ-III65 hydrochloride; NSC706744 hydrochloride	Topoisomerase	Cancer
LMP744 hydrochloride (MJ-III65 hydrochloride) is a DNA intercalator and Topoisomerase I (Top1) inhibitor with antitumor activity .

HY-N2063

12-Ethyl-9-hydroxycamptothecin	Topoisomerase	Others
12-Ethyl-9-hydroxycamptothecin is a derivative of Camptothecin. Camptothecin (CPT), a kind of alkaloid, is a DNA topoisomerase I (Topo I) inhibitor with an IC₅₀ of 679 nM .

HY-N10367

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

HY-13631

Exatecan 10+ Cited Publications DX-8951	ADC Payload Topoisomerase	Cancer
Exatecan (DX-8951) 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-169509

Topoisomerase I/II inhibitor 8	PARP Necroptosis Topoisomerase RIP kinase Mixed Lineage Kinase	Cancer
Topoisomerase I/II Inhibitor 8 (Compound Ru7) is a dual catalytic inhibitor of **Topoisomerase I/II*, capable of inducing DNA* damage and PARP-1 activation, which subsequently leads to the activation of RIPK1, RIPK3, and MLKL, ultimately triggering necroptosis. Topoisomerase I/II Inhibitor 8 demonstrates remarkable anticancer activity by effectively targeting the nuclei of cancer cells and inducing cell death through necroptosis, showing great clinical potential in circumventing drug resistance in cancer treatment .

HY-13631A

Exatecan mesylate 10+ Cited Publications DX8951f	ADC Payload Topoisomerase	Cancer
Exatecan mesylate (DX8951f) 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-42487

Exatecan Intermediate 1	ADC Payload Topoisomerase	Cancer
Exatecan Intermediate 1 (compound 6) is an intermediate of Exatecan (HY-13631). Exatecan is a DNA topoisomerase I inhibitor with anticancer effects .

HY-121309

Doxorubicinone 2 Publications Verification Adriamycin aglycone; Adriamycinone	Endogenous Metabolite	Cancer
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-N2198

Podocarpusflavone A	Topoisomerase Apoptosis	Cancer
Podocarpusflavone A is a DNA topoisomerase I inhibitor. Podocarpusflavone A has moderated anti-proliferative activity and induces cell apoptosis in MCF-7. Podocarpusflavone A is developing anti-tumor agents .

HY-13631P

Exatecan mesylate dihydrate DX-8951 mesylate dihydrate	ADC Payload Topoisomerase	Cancer
Exatecan (DX-8951) mesylate dihydrate 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-13744

Rubitecan RFS 2000; 9-Nitrocamptothecin	Topoisomerase	Cancer
Rubitecan (RFS 2000), a Camptothecin derivative, is an orally active topoisomerase I inhibitor with broad antitumor activity, and induces protein-linked DNA single-strand breaks, thereby blocking DNA and RNA synthesis in dividing cells .

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-158230

SN-398	Topoisomerase	Cancer
SN-398 is a derivative of Camptothecin (HY-158230), which is an antitumor drug. Acting by inhibiting mammalian DNA topoisomerase I (Topo I), stabilizing the Topo I-DNA complex prevents DNA rewiring to induce Topo I mediated DNA breaks. In Hela cell tests, SN-398 shows stronger antitumor activity than SN-38 (HY-13704) (IC₅₀=1.562 μM). SN-398 can be used to study the anti-proliferation and growth inhibition of Topo I in cancer cells .

HY-16055

Silatecan AR-67; DB 67	Topoisomerase	Cancer
Silatecan (AR-67; DB 67) is a Camptothecin (HY-16560) analogue with improved stability and lipophilicity. Silatecan is an inhibitor for topoisomerase I, that inhibits the DNA replication and transcription, and exhibits antitumor and radiosensitizing activities

HY-145078

PNU-EDA-Gly5	Drug-Linker Conjugates for ADC	Cancer
PNU-EDA-Gly5 is an oligo-glycine linker-payload for ADC synthesis, composed of a DNA topoisomerase I inhibitor PNU-159682 and a linker EDA-Gly5 .

HY-121309S

Doxorubicinone-d3 Adriamycin aglycone-d₃; Adriamycinone-d₃	Endogenous Metabolite	Cancer
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-161970

XSJ05	Topoisomerase Apoptosis	Cancer
XSJ05 is a camptothecin (CPT) derivative that can inhibit topoisomerase I (Topo I) to exert anti-cancer activity. XSJ05 can trigger DNA double-strand breaks, leading to DNA damage. XSJ05 can inhibit the growth of colorectal cancer (CRC), arrest the cell cycle in G2/M phase, and induce apoptosis .

HY-13631D

Dxd 10+ Cited Publications Exatecan derivative for ADC	Topoisomerase ADC Payload	Cancer
Dxd (Exatecan derivative for ADC) 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-156848

Fmoc-GGFG-DXd	Drug-Linker Conjugates for ADC	Cancer
Fmoc-GGFG-DXd is a drug-linker conjugate for ADC. Fmoc-GGFG-DXd contains a ADC linker Fmoc-GGFG and a DNA topoisomerase I inhibitor DXd (HY-13631D) .

HY-153013

SN38-COOH	Drug-Linker Conjugates for ADC	Cancer
SN38-COOH is used for the synthesis of antibody-drug conjugates (ADCs). SN-38 is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 inhibits DNA and RNA synthesis .

Cat. No.	Product Name	Target	Research Area

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 .

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) .

Cat. No.	Product Name	Category	Target	Chemical Structure

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-N2063

12-Ethyl-9-hydroxycamptothecin	Alkaloids Structural Classification Monophenols other families Pyrrole Alkaloids Classification of Application Fields Source classification Other Diseases Phenols Quinoline Alkaloids Plants Disease Research Fields	Topoisomerase
12-Ethyl-9-hydroxycamptothecin is a derivative of Camptothecin. Camptothecin (CPT), a kind of alkaloid, is a DNA topoisomerase I (Topo I) inhibitor with an IC₅₀ of 679 nM .

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 IC₅₀s of 0.8 μM and 2.67 μM, respectively.

HY-N2198

Podocarpusflavone A	Structural Classification Flavonoids Classification of Application Fields Guttiferae Source classification Phenols Polyphenols Plants Garcinia subelliptica Biflavones Disease Research Fields Cancer	Topoisomerase Apoptosis
Podocarpusflavone A is a DNA topoisomerase I inhibitor. Podocarpusflavone A has moderated anti-proliferative activity and induces cell apoptosis in MCF-7. Podocarpusflavone A is developing anti-tumor agents .

HY-13744

Rubitecan RFS 2000; 9-Nitrocamptothecin	Alkaloids Structural Classification Classification of Application Fields Source classification Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants Disease Research Fields Cancer	Topoisomerase
Rubitecan (RFS 2000), a Camptothecin derivative, is an orally active topoisomerase I inhibitor with broad antitumor activity, and induces protein-linked DNA single-strand breaks, thereby blocking DNA and RNA synthesis in dividing cells .

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-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-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-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-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-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-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 .

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-N11536

erythro-Austrobailignan-6	Structural Classification Saururaceae Saururus chinensis (Lour.) Baill. Source classification Lignans Phenylpropanoids Plants	Topoisomerase Apoptosis
erythro-Austrobailignan-6 is an orally active anti-cancer agent. erythro-Austrobailignan-6 inhibits DNA *topoisomerase* I and II activity. erythro-Austrobailignan-6 induces cell apoptosis and increases phosphorylation of p38 and JNK .

HY-13704

SN-38 55+ Cited Publications 7-Ethyl-10-hydroxycamptothecin	Alkaloids Structural Classification Classification of Application Fields Labiatae Samanea saman (Jacq.) Merr. Source classification Quinoline Alkaloids Plants Disease Research Fields Cancer	Drug Metabolite Topoisomerase ADC Payload Autophagy
SN-38 is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 inhibits *DNA* and RNA synthesis with IC₅₀s of 0.077 and 1.3 μM, respectively. SN-38 is a payload of sacituzumab govitecan (HY -132254) .

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-15142R

Doxorubicin hydrochloride (Standard) 2 Publications Verification Hydroxydaunorubicin hydrochloride (Standard); ADR (Standard)	Quinones Structural Classification Microorganisms Anthraquinones Source classification	Reference Standards Topoisomerase ADC Payload AMPK Autophagy Apoptosis HIV HBV Mitophagy Antibiotic Bacterial
Doxorubicin hydrochloride (Standard) is the analytical standard of Doxorubicin hydrochloride. This product is intended for research and analytical applications. Doxorubicin (Hydroxydaunorubicin) hydrochloride, 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-W046353

2-Methoxycinnamaldehyde o-Methoxycinnamaldehyde	Structural Classification Cinnamomum cassia (L.) D. Don Classification of Application Fields Simple Phenylpropanols Source classification Phenylpropanoids Plants Lauraceae Disease Research Fields Cancer	Apoptosis NF-κB Topoisomerase Mitochondrial Metabolism Caspase
2-Methoxycinnamaldehyde (o-Methoxycinnamaldehyde) is a natural compound that can be isolated from Cinnamomum cassia. 2-Methoxycinnamaldehyde inhibits *topoisomerase-I/II* and NF-κB signaling pathway, causes mitochondrial dysfunction, induces lysosomal vesiculation, thereby leading to DNA damage and cell apoptosis. 2-Methoxycinnamaldehyde exhibits antitumor effects .

HY-B0147

Pefloxacin 2 Publications Verification Pefloxacinium	Infection Classification of Application Fields Disease Research Fields	Antibiotic Bacterial Parasite DNA/RNA Synthesis Topoisomerase
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-13704R

SN-38 (Standard) 7-Ethyl-10-hydroxycamptothecin (Standard)	Alkaloids Structural Classification Labiatae Samanea saman (Jacq.) Merr. Source classification Quinoline Alkaloids Plants	Drug Metabolite Reference Standards Topoisomerase ADC Payload Autophagy
SN-38 (Standard) is the analytical standard of SN-38. This product is intended for research and analytical applications. SN-38 is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 inhibits DNA and RNA synthesis with IC50s of 0.077 and 1.3 μM, respectively. SN-38 is a payload of sacituzumab govitecan (HY -132254) .

HY-16560R

Camptothecin (Standard) Campathecin (Standard); (S)-(+)-Camptothecin (Standard); CPT (Standard)	Structural Classification Alkaloids Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants	Reference Standards Topoisomerase ADC Payload MicroRNA Influenza Virus Apoptosis Fungal Antibiotic
Camptothecin (Standard) (Campathecin (Standard)) is the analytical standard of Camptothecin (HY-16560). This product is intended for research and analytical applications. 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-N0095

(S)-10-Hydroxycamptothecin 10-HCPT; 10-Hydroxycamptothecin	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 Apoptosis
(S)-10-Hydroxycamptothecin (10-HCPT;10-Hydroxycamptothecin) is a DNA topoisomerase I inhibitor of isolated from the Chinese plant Camptotheca accuminata. (S)-10-Hydroxycamptothecin exhibits a remarkable apoptosis-inducing effect. (S)-10-Hydroxycamptothecin has the potential for hepatoma, gastric carcinoma, colon cancer and leukaemia treatment .

HY-W046353R

2-Methoxycinnamaldehyde (Standard) o-Methoxycinnamaldehyde (Standard)	Structural Classification Cinnamomum cassia (L.) D. Don Simple Phenylpropanols Source classification Phenylpropanoids Plants Lauraceae	Reference Standards Apoptosis NF-κB Mitochondrial Metabolism Caspase Topoisomerase
2-Methoxycinnamaldehyde (Standard) is the analytical standard of 2-Methoxycinnamaldehyde. This product is intended for research and analytical applications. 2-Methoxycinnamaldehyde (o-Methoxycinnamaldehyde) is a natural compound that can be isolated from Cinnamomum cassia. 2-Methoxycinnamaldehyde inhibits *topoisomerase-I/II* and NF-κB signaling pathway, causes mitochondrial dysfunction, induces lysosomal vesiculation, thereby leading to DNA damage and cell apoptosis. 2-Methoxycinnamaldehyde exhibits antitumor effects .

HY-N0095R

(S)-10-Hydroxycamptothecin (Standard) 10-HCPT (Standard); 10-Hydroxycamptothecin (Standard)	Alkaloids Structural Classification Monophenols Pyrrole Alkaloids Source classification Phenols Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants	Reference Standards Topoisomerase Apoptosis
(S)-10-Hydroxycamptothecin (Standard) is the analytical standard of (S)-10-Hydroxycamptothecin. This product is intended for research and analytical applications. (S)-10-Hydroxycamptothecin (10-HCPT;10-Hydroxycamptothecin) is a DNA topoisomerase I inhibitor of isolated from the Chinese plant Camptotheca accuminata. (S)-10-Hydroxycamptothecin exhibits a remarkable apoptosis-inducing effect. (S)-10-Hydroxycamptothecin has the potential for hepatoma, gastric carcinoma, colon cancer and leukaemia treatment .

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-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-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-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-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-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-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-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-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 .

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 .

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