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Isoforms Recommended:	Topo I

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topoisomerase-I

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Topoisomerase (214) ADC Antibody (1) ADC Cytotoxin (41) AMPK (3) Androgen Receptor (3) Antibiotic (16) Antibody-Drug Conjugates (ADCs) (10) Apoptosis (46) ATM/ATR (1) Autophagy (27) Bacterial (10) Bcl-2 Family (2) Btk (1) Caspase (3) CCR (1) Cholinesterase (ChE) (2) Cuproptosis (1) Cytochrome P450 (2) DNA-PK (1) DNA/RNA Synthesis (12) Drug Intermediate (2) Drug Metabolite (5) Drug-Linker Conjugates for ADC (43) EGFR (4) Elastase (1) Endogenous Metabolite (8) Estrogen Receptor/ERR (3) Fatty Acid Synthase (FASN) (1) Fungal (7) GLUT (2) Glutathione Peroxidase (1) HBV (3) HDAC (1) Histone Methyltransferase (1) HIV (6) HSV (1) IAP (1) Indoleamine 2,3-Dioxygenase (IDO) (2) Influenza Virus (3) Integrin (1) Isotope-Labeled Compounds (14) Liposome (1) MDM-2/p53 (1) MicroRNA (3) Microtubule/Tubulin (3) Mitochondrial Metabolism (2) Mitophagy (6) Mixed Lineage Kinase (1) Necroptosis (1) NF-κB (6) NO Synthase (1) Parasite (6) PARP (1) Peptide-Drug Conjugates (PDCs) (1) PI3K (1) Proteasome (3) Reactive Oxygen Species (ROS) (3) Reference Standards (19) RIP kinase (1) Sodium Channel (1) Survivin (1) TMV (1) TROP2 (1) α-synuclein (1)
By Research Areas:	Cancer (241) Infection (30) Inflammation/Immunology (10) Metabolic Disease (2) Neurological Disease (1)
Click Chemistry:	ADC Synthesis (1) DBCO (2) Alkynes (2)

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Targets Recommended: Topoisomerase

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-148058

Topoisomerase I inhibitor 8	Topoisomerase	Cancer
Topoisomerase I inhibitor 8 is a potent *topoisomerase I* inhibitor. Topoisomerase I inhibitor 8 is a hexacyclic analogue of camptothecin, and displays cytotoxic effect against tumor cells .

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-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-162341

Topoisomerase I inhibitor 15	Topoisomerase	Cancer
Topoisomerase I inhibitor 15 (compound 4b) is an inhibitor of topoisomerase I with anticancer activity. Topoisomerase I inhibitor 15 inhibits A549 cells with an IC₅₀ of 7.34 μM .

HY-161082

Topoisomerase I inhibitor 12	Topoisomerase	Cancer
Topoisomerase I inhibitor 12 (compound 12), a Camptothecin (HY-16560)-based derivative, is a potent *Topoisomerase I* inhibitor. Topoisomerase I inhibitor 12 shows anticancer activity .

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-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-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-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-143301

Topoisomerase I inhibitor 4	Topoisomerase	Cancer
Topoisomerase I inhibitor 4 (compound 7a) is a *topoisomerase I* inhibitor. Topoisomerase I inhibitor 4 inhibits HepG2, A549, MCF-7 and HeLa cancer cells proliferation with IC₅₀s of 1.20, 2.09, 1.56 and 1.92 μM, respectively. Topoisomerase I inhibitor 4 can be used for the research of cancer .

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-169628

Topoisomerase I/II inhibitor 7	Topoisomerase	Cancer
Topoisomerase I/II inhibitor 7 (Compound 5h) is a *Topoisomerase I/II* inhibitor .

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-162091

Topoisomerase I inhibitor 13	Topoisomerase	Cancer
Topoisomerase I inhibitor 13 (Compound G11) is a Topo I inhibitor that inhibits cancer cell proliferation. Topoisomerase I inhibitor 13 significantly inhibits tumor growth in vivo .

HY-146504

Topoisomerase I/II inhibitor 3	Topoisomerase PI3K Apoptosis Reactive Oxygen Species (ROS)	Cancer
Topoisomerase I/II inhibitor 3 (compound 7) is a potent topoisomerase I (Topo I) and *II (Topo* II)** dual inhibitor. Topoisomerase I/II inhibitor 3 can inhibit cell proliferation, invasion and migration, and induce apoptosis by inhibiting PI3K/Akt/mTOR signaling pathway. Topoisomerase I/II inhibitor 3 can be used for liver cancer research .

HY-156464

Topoisomerase I inhibitor 10	Topoisomerase	Infection
Topoisomerase I inhibitor 10 (compound 13) is a *leishmanial topoisomerase* IB** inhibitor. Topoisomerase I inhibitor 10 has antileishmanial activity against L. donovani promastigotes, with the IC₅₀ of 27.91 μM .

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-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-156462

Topoisomerase I inhibitor 9	Topoisomerase	Infection
Topoisomerase I inhibitor 9 (compound 3d) is a *leishmanial topoisomerase* IB** inhibitor. Topoisomerase I inhibitor 9 has antileishmanial activity against L. donovani promastigotes, with the IC₅₀ of 34.81μM .

HY-168632

Topoisomerase I/II inhibitor 6	Topoisomerase Apoptosis	Cancer
Topoisomerase I/II inhibitor 6 (compound 3i) is a potent inhibitor of *topoisomerase I* and II with IC₅₀s of 4.77 and 15 µM, respectively. Topoisomerase I/II inhibitor 6 shows antiproliferative activities against human melanoma LOX IMVI cancer cell line with IC₅₀ values of 26.7 and 25.4 µM, respectively. Topoisomerase I/II inhibitor 6 provokes substantial levels of early, late apoptosis and increases the expression level of active caspase-3 .

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-168150

Topoisomerase I/II inhibitor 5	Topoisomerase	Cancer
Topoisomerase I/II inhibitor 5 (compund 1) simultaneously inhibits activities of *Topo*I and II by binding to and stabilizing the G4 structure .

HY-16562

Irinotecan 45+ 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 Cytotoxin Topoisomerase	Cancer
Mal-Exatecan is a Mal (Maleimide) modified Exatecan (HY-13631), a DNA topoisomerase I (topoisomerase I) inhibitor .

HY-122014

S 39625	Topoisomerase	Others
39625 is a camptothecin ketone analogue, a stable, potent and selective topoisomerase I inhibitor, active against purified topoisomerase I and cytotoxic to cancer cells.

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-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-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-19825

Rebeccamycin	Topoisomerase ADC Cytotoxin 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-14821

Namitecan ST-1968	Topoisomerase	Cancer
Namitecan is a potent *topoisomerase I* inhibitor, with antitumor property.

HY-118942

Topovale ARC 111	Topoisomerase	Cancer
Topovale (ARC 111) is a *topoisomerase I* inhbitor. Topovale is an antitumor agent, and shows low nM cytotoxicity against a panel of cancer cells. Topovale induces reversible topoisomerase I (TOP1) cleavage complexes in tumor cells .

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-13768A

Topotecan hydrochloride 25+ Cited Publications SKF 104864A hydrochloride; NSC 609669 hydrochloride	Topoisomerase Autophagy Apoptosis	Cancer
Topotecan Hydrochloride (SKF 104864A Hydrochloride) is a *Topoisomerase I* inhibitor with potent antineoplastic activities.

HY-14812

Karenitecin 1 Publications Verification Cositecan; BNP 1350	Topoisomerase	Cancer
Karenitecin (Cositecan) is a *topoisomerase I* inhibitor, with potent anti-cancer activity.

HY-N10115

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

HY-18350A

Indimitecan hydrochloride LMP776 hydrochloride	Topoisomerase	Cancer
Indimitecan hydrochloride is a topoisomerase I (Top1) inhibitor with anticancer activities .

HY-13566A

Belotecan hydrochloride 2 Publications Verification CKD-602	Topoisomerase	Cancer
Belotecan hydrochloride (CKD-602 hydrochloride), a *Topoisomerase I* inhibitor, is a synthetic camptothecin derivative.

HY-16568

Irinotecan hydrochloride trihydrate 45+ Cited Publications (+)-Irinotecan hydrochloride trihydrate; CPT-11 hydrochloride trihydrate	Topoisomerase Autophagy	Cancer
Irinotecan hydrochloride trihydrate ((+)-Irinotecan hydrochloride trihydrate) is a *topoisomerase I* inhibitor with antitumor activity .

HY-13622B

Elomotecan TFA BN 80927 TFA	Topoisomerase	Cancer
Elomotecan TFA is a potent inhibitor of *topoisomerases I* and II. Elomotecan TFA is a camptothecin analog belonging to the homocamptothecin family (hCPT). Elomotecan TFA reduces the proliferation of different tumor cells with higher potency than other anticancer agents of reference targeting *topoisomerases I* and II .

HY-13622A

Elomotecan BN 80927 free base	Topoisomerase	Cancer
Elomotecan (BN 80927 free base) is a potent inhibitor of *topoisomerases I* and II. Elomotecan is a camptothecin analog belonging to the homocamptothecin family (hCPT). Elomotecan reduces the proliferation of different tumor cells with higher potency than other anticancer agents of reference targeting *topoisomerases I* and II .

HY-18350

Indimitecan LMP776	Topoisomerase	Cancer
Indimitecan (LMP776) is a topoisomerase I (Top1) inhibitor with anticancer activities .

HY-16228

Genz-644282 2 Publications Verification	Topoisomerase	Cancer
Genz-644282 is a non-camptothecin *topoisomerase I* inhibitor, used for cancer research.

HY-13622

Elomotecan hydrochloride BN 80927	Topoisomerase	Cancer
Elomotecan hydrochloride (BN 80927) is a potent inhibitor of *topoisomerases I* and II. Elomotecan hydrochloride (BN 80927) is a camptothecin analog belonging to the homocamptothecin family (hCPT). Elomotecan hydrochloride (BN 80927) reduces the proliferation of different tumor cells with higher potency than other anticancer agents of reference targeting *topoisomerases I* and II .

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-16562A

Irinotecan hydrochloride 45+ Cited Publications (+)-Irinotecan hydrochloride; CPT-11 hydrochloride; VAL-413	Topoisomerase Autophagy	Cancer
Irinotecan hydrochloride ((+)-Irinotecan hydrochloride) is a *topoisomerase I* inhibitor mainly used to treat colon cancer and rectal cancer .

HY-N2331

Proscillaridin A 1 Publications Verification	Topoisomerase	Cancer
Proscillaridin A is a potent poison of *topoisomerase I/II* activity with IC₅₀ values of 30 nM and 100 nM, respectively .

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 .

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 .

Cat. No.	Product Name	Target	Research Area

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-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 .

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-13768A

Topotecan hydrochloride 25+ 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-16562A

Irinotecan hydrochloride 45+ 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-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-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-19825

Rebeccamycin	Structural Classification Microorganisms Classification of Application Fields Antibiotics Source classification Disease Research Anticancer Disease Research Fields Other Antibiotics Cancer	Topoisomerase ADC Cytotoxin 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-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-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-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-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-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-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-16562AR

Irinotecan hydrochloride (Standard) (+)-Irinotecan hydrochloride (Standard); CPT-11 hydrochloride (Standard); VAL-413 (Standard)	Alkaloids Structural Classification Source classification Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants	Reference Standards Topoisomerase Autophagy
Irinotecan (hydrochloride) (Standard) is the analytical standard of Irinotecan (hydrochloride). This product is intended for research and analytical applications. Irinotecan hydrochloride ((+)-Irinotecan hydrochloride) is a topoisomerase I inhibitor mainly used to treat colon cancer and rectal cancer .

HY-N2331R

Proscillaridin A (Standard)	Apocynaceae Structural Classification Source classification Nerium indicum Mill. Plants Steroids	Reference Standards Topoisomerase
Proscillaridin A (Standard) is the analytical standard of Proscillaridin A. This product is intended for research and analytical applications. Proscillaridin A is a potent poison of topoisomerase I/II activity with IC₅₀ values of 30 nM and 100 nM, 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-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-13555

β-Lapachone 5+ Cited Publications ARQ-501; NSC-26326	Quinones Structural Classification other families Classification of Application Fields Source classification Plants Naphthalene Quinones Disease Research Fields Cancer	Indoleamine 2,3-Dioxygenase (IDO) Topoisomerase Autophagy Apoptosis
β-Lapachone (ARQ-501;NSC-26326) is a naturally occurring O-naphthoquinone, acts as a *topoisomerase I* inhibitor, and induces apoptosis by inhibiting cell cycle progression.

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-10529

Betulinic acid 25+ Cited Publications Lupatic acid; Betulic acid	Infection Triterpenes Structural Classification other families Classification of Application Fields Terpenoids Source classification Plants Endogenous metabolite Inflammation/Immunology Disease Research Fields	Apoptosis Topoisomerase HIV Autophagy Mitophagy NF-κB Endogenous Metabolite Parasite
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-N0275R

(±)-10-Hydroxycamptothecin (Standard)	Alkaloids Structural Classification Monophenols Pyrrole Alkaloids Source classification Phenols Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants	Topoisomerase
(±)-10-Hydroxycamptothecin (Standard) is the analytical standard of (±)-10-Hydroxycamptothecin. This product is intended for research and analytical applications. (±)-10-Hydroxycamptothecin is an indole alkaloid that inhibits the activity of topoisomerase I and has a broad spectrum of anticancer activity.

HY-116529

Lamellarin E	Structural Classification Alkaloids Microorganisms Other Alkaloids Source classification	Others
Lamellarin E is a biologically active marine alkaloid, while the Lamellarin series of alkaloids show potential cytotoxicity, topoisomerase I inhibition, protein kinase inhibition, multidrug resistance reversal, and anti-HIV-1 activity .

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-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-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-N6865

Groenlandicine 2 Publications Verification	Alkaloids Piperidine Alkaloids Monophenols Classification of Application Fields Source classification Ranunculaceae Coptis chinensis Franch. Phenols Metabolic Disease Plants Isoquinoline Alkaloids Disease Research Fields	Topoisomerase
Groenlandicine is a protoberberine alkaloid isolated from Coptidis Rhizoma. Groenlandicine exhibits moderate inhibitory effect with IC₅₀ value of 154.2 μM for human recombinant aldose reductase (HRAR) . Groenlandicine selectively induces *topoisomerase I*-mediated DNA cleavage .

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-N2306A

Aclacinomycin A hydrochloride Aclarubicin hydrochloride	Quinones Structural Classification Microorganisms Classification of Application Fields Anthraquinones Source classification Phenols Polyphenols Disease Research Fields Cancer	Topoisomerase DNA/RNA Synthesis Proteasome Antibiotic
Aclacinomycin A (Aclarubicin) hydrochloride is an orally active and potent anthracycline antitumor antibiotic. Aclacinomycin A hydrochloride is an inhibitor of *topoisomerase I* and II. Aclacinomycin A hydrochloride inhibits synthesis of nucleic acid, especially RNA. Aclacinomycin A hydrochloride might inhibit the 26S protease complex as well as the ubiquitin-ATP-dependent proteolysis .

HY-A0210

Cerulenin 5+ Cited Publications	Structural Classification Microorganisms Antifungal Classification of Application Fields Antibiotics Source classification Metabolic Disease Mammalian Cell Culture Disease Research Anticancer Disease Research Fields Other Antibiotics	Fatty Acid Synthase (FASN) Fungal Apoptosis Antibiotic
Cerulenin, a potent, natural inhibitor of fatty acid synthase (FASN), is an epoxide produced by the fungus Cephalosporium caeruleus. Cerulenin inhibits topoisomerase I catalytic activity and augments SN-38-induced apoptosis. Cerulenin has antifungal and antitumor activies .

HY-N2306

Aclacinomycin A 3 Publications Verification Aclarubicin	Quinones Structural Classification Microorganisms Anthraquinones	Topoisomerase DNA/RNA Synthesis Proteasome Antibiotic
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-10529R

Betulinic acid (Standard) Lupatic acid (Standard); Betulic acid (Standard)	Triterpenes Structural Classification other families Terpenoids Source classification Plants Endogenous metabolite	Reference Standards Apoptosis Topoisomerase HIV Autophagy Mitophagy NF-κB Endogenous Metabolite Parasite
Betulinic acid (Standard) is the analytical standard of Betulinic acid. This product is intended for research and analytical applications. 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-13704

SN-38 45+ 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 Cytotoxin 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-13555R

β-Lapachone (Standard)	Quinones Structural Classification other families Source classification Plants Naphthalene Quinones	Indoleamine 2,3-Dioxygenase (IDO) Topoisomerase Autophagy Apoptosis
β-Lapachone (Standard) is the analytical standard of β-Lapachone. This product is intended for research and analytical applications. β-Lapachone (ARQ-501;NSC-26326) is a naturally occurring O-naphthoquinone, acts as a topoisomerase I inhibitor, and induces apoptosis by inhibiting cell cycle progression.

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-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-N2306R

Aclacinomycin A (Standard) Aclarubicin (Standard)	Quinones Structural Classification Microorganisms Anthraquinones	Reference Standards Topoisomerase DNA/RNA Synthesis Proteasome Antibiotic
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-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-15142

Doxorubicin hydrochloride Maximum Cited Publications 476 Publications Verification Hydroxydaunorubicin hydrochloride; ADR	Infection Quinones Structural Classification Microorganisms Classification of Application Fields Anthraquinones Source classification Disease Research Fields	Topoisomerase ADC Cytotoxin 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-16560

Camptothecin 45+ 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 Cytotoxin 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-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-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 Cytotoxin 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-15142A

Doxorubicin Hydroxydaunorubicin	Infection Quinones Structural Classification Microorganisms Classification of Application Fields Anthraquinones Source classification Phenols Polyphenols Disease Research Fields	ADC Cytotoxin 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-15142R

Doxorubicin hydrochloride (Standard) 1 Publications Verification Hydroxydaunorubicin hydrochloride (Standard); ADR (Standard)	Quinones Structural Classification Microorganisms Anthraquinones Source classification	Reference Standards Topoisomerase ADC Cytotoxin 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-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-16560R

Camptothecin (Standard) Campathecin (Standard); (S)-(+)-Camptothecin (Standard); CPT (Standard)	Structural Classification Alkaloids Quinoline Alkaloids Camptotheca acuminata Decne. Nyssaceae Plants	Reference Standards Topoisomerase ADC Cytotoxin 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-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-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 .

HY-Y0790R

Cuminaldehyde (Standard) p-Isopropylbenzaldehyde (Standard)	Structural Classification Ketones, Aldehydes, Acids Rudbeckia laciniata L. Source classification Umbelliferae Plants Endogenous metabolite	α-synuclein Reference Standards
Cuminaldehyde Standard is the analytical standard of Cuminaldehyde. This product is intended for research and analytical applications. Cuminaldehyde is the main component of Cuminum cyminum and has multiple biological activities, including anti-inflammatory, anti-cancer, anti-diabetic, anti-injury, anti-neuropathy and antibacterial effects. Cuminaldehyde is an inhibitor of aldose reductase (IC₅₀= 0.00085 mg/mL) and α-glucosidase (IC₅₀=0.5 mg/mL). Cuminaldehyde also inhibits the fibrillation of α-synuclein and prevents its aggregation Cuminaldehyde can induce apoptosis in colon adenocarcinoma cells by targeting topoisomerase I and II. In addition, Cuminaldehyde also exerts anti-inflammatory activity by inhibiting lipoxygenase. Cuminaldehyde has a strong inhibitory effect on the growth of Aspergillus flavus and the biosynthesis of aflatoxin B1 (AFB1). Cuminaldehyde can exert anti-injury and anti-neuropathy effects by participating in opioid receptors, L-arginine/NO/cGMP pathways and anti-inflammatory effects. Cuminaldehyde has potential application value in the research of neurodegenerative diseases, cancer, diabetes and neuropathic pain diseases .

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-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-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-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-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-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-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-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-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-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-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-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-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-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-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 .

Cat. No.	Compare	Product Name	Application	Reactivity

HY-P82492

	Topoisomerase I Antibody (YA2237) TOP1; DNA topoisomerase 1; DNA topoisomerase I	WB, IHC-F, IHC-P, ICC/IF	Human, Mouse, Rat
	Topoisomerase I Antibody (YA2237) is a rabbit-derived non-conjugated IgG antibody (Clone NO.: YA2237), targeting Topoisomerase I, with a predicted molecular weight of 91 kDa (observed band size: 91 kDa). Topoisomerase I Antibody (YA2237) can be used for WB, IHC-F, IHC-P, ICC/IF experiment in human, mouse, rat background.

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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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