1. Signaling Pathways
  2. Cell Cycle/DNA Damage
  3. Topoisomerase
  4. Topo I Isoform
  5. Topo I Inhibitor

Topo I Inhibitor

Topo I Inhibitors (77):

Cat. No. Product Name Effect Purity
  • HY-15142
    Doxorubicin hydrochloride
    Inhibitor 99.60%
    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-13631A
    Exatecan mesylate
    Inhibitor 99.91%
    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-13631D
    Dxd
    Inhibitor ≥99.0%
    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-13704
    SN-38
    Inhibitor 99.89%
    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.
  • HY-16562
    Irinotecan
    Inhibitor 99.84%
    Irinotecan ((+)-Irinotecan) is a topoisomerase I inhibitor, preventing religation of the DNA strand by binding to topoisomerase I-DNA complex.
  • HY-13631P
    Exatecan mesylate dihydrate
    Inhibitor
    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-160005
    LMP517
    Inhibitor
    LMP517 (NSC 781517) a indenoisoquinoline, is a potent a dual TOP1 and TOP2 inhibitor. LMP517 shows better antitumor activity than its parent compound LMP744 (HY-U00248) against H82 (Small Cell Lung Cancer) xenografts. LMP517 induces TOP1 cleavage complexes (TOP1ccs) and TOP2ccs.
  • HY-161082
    Topoisomerase I inhibitor 12
    Inhibitor
    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-16560
    Camptothecin
    Inhibitor 99.82%
    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-13768A
    Topotecan hydrochloride
    Inhibitor 99.76%
    Topotecan Hydrochloride (SKF 104864A Hydrochloride) is a Topoisomerase I inhibitor with potent antineoplastic activities.
  • HY-16562A
    Irinotecan hydrochloride
    Inhibitor 99.89%
    Irinotecan hydrochloride ((+)-Irinotecan hydrochloride) is a topoisomerase I inhibitor mainly used to treat colon cancer and rectal cancer.
  • HY-13631
    Exatecan
    Inhibitor 99.93%
    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-10529
    Betulinic acid
    Inhibitor ≥98.0%
    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-13555
    β-Lapachone
    Inhibitor 99.99%
    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-16568
    Irinotecan hydrochloride trihydrate
    Inhibitor 99.89%
    Irinotecan hydrochloride trihydrate ((+)-Irinotecan hydrochloride trihydrate) is a topoisomerase I inhibitor with antitumor activity.
  • HY-16700
    PNU-159682
    Inhibitor 98.25%
    PNU-159682, a metabolite of the anthracycline Nemorubicin, is a highly potent DNA topoisomerase II inhibitor with excellent cytotoxicity. PNU-159682 acts as a more potent and tolerated ADC cytotoxin than Doxorubicin for ADC synthesis. PNU-159682 can be used in EDV-nanocell technology to overcome agent resistance.
  • HY-13631DS
    Dxd-d5
    Inhibitor 98.63%
    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) [1].
  • HY-13566A
    Belotecan hydrochloride
    Inhibitor 99.88%
    Belotecan hydrochloride (CKD-602 hydrochloride), a Topoisomerase I inhibitor, is a synthetic camptothecin derivative.
  • HY-N0095
    (S)-10-Hydroxycamptothecin
    Inhibitor 99.38%
    (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-N2331
    Proscillaridin A
    Inhibitor 99.74%
    Proscillaridin A is a potent poison of topoisomerase I/II activity with IC50 values of 30 nM and 100 nM, respectively.