1. Signaling Pathways
  2. Antibody-drug Conjugate/ADC Related
  3. ADC Cytotoxin

ADC Cytotoxin

ADC Payload

ADC cytotoxins (also known as payloads) are cytotoxic agents that induce target cell death in Antibody Drug Conjugates (ADCs). An ADC is a targeted agent composed with a monoclonal antibody, a linker and a cytotoxin. The cytotoxin is the most important component as it determines the potency to kill cancer cells of an ADC.

There are many cytotoxins which are currently being used such as Calicheamicins, Duocarmycins, Pyrrolobenzodiazepines (PBDs), Camptothecins, Daunorubicins/Doxorubicins, Auristatins and Maytansinoids. They can be divided in two classes based on their mechanism of action, DNA damaging agents and tubulin inhibitors. Among them Calicheamicins, Duocarmycins and PBDs are DNA minor grove binders, Camptothecins and Daunorubicins/Doxorubicins are topoisomerase inhibitors, which are DNA damaging agents. Auristatins and Maytansinoids are tubulin inhibitors. Except for the listed cytotoxins, there are numbers of traditional cytotoxic agents with similar mechanisms of killing cancer cells and can also be used in the development of ADCs.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-13631AS
    Exatecan-d5 mesylate
    99.82%
    Exatecan-d5 (mesylate) is deuterium labeled Exatecan mesylate. Exatecan mesylate is a DNA topoisomerase I inhibitor, with an IC50 of 0.975 μg/mL[1].
    Exatecan-d<sub>5</sub> mesylate
  • HY-13442
    Eribulin
    99.92%
    Eribulin (E7389) is a microtubule targeting agent that is used for the research of metastatic breast cancer. Eribulin inhibits the proliferation of cancer cells by binding microtubule proteins and microtubules.
    Eribulin
  • HY-19609
    Calicheamicin
    98.28%
    Calicheamicin, an antitumor antibiotic, is a cytotoxic agent that causes double-strand DNA breaks. Calicheamicin is a DNA synthesis inhibitor. Calicheamicin is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Calicheamicin
  • HY-13580
    Budesonide
    99.73%
    Budesonide, an inhaled glucocortical steroid, is an orally active glucocorticoid receptor agonist. Budesonide decreases the size of lung tumors, reverses DNA hypomethylation and modulates mRNA expression of genes. Budesonide is an anti-inflammatory agent used for asthma.
    Budesonide
  • HY-101161
    SG3199
    98.94%
    SG3199 is a cytotoxic DNA minor groove interstrand crosslinking pyrrolobenzodiazepine (PBD) dimer. SG3199 is the released warhead component of the ADC payload Tesirine (SG3249).
    SG3199
  • HY-14648A
    Dexamethasone acetate
    99.69%
    Dexamethasone acetate (Dexamethasone 21-acetate) is a glucocorticoid receptor agonist. Dexamethasone also significantly decreases CD11b, CD18, and CD62L expression on neutrophils, and CD11b and CD18 expression on monocytes. Dexamethasone is highly effective in the control of COVID-19 infection. Dexamethasone inhibits production of exosomes containing inflammatory microRNA-155 in lipopolysaccharide-induced macrophage inflammatory responses.
    Dexamethasone acetate
  • HY-16261
    Aldoxorubicin
    Aldoxorubicin (INNO-206) is an albumin-binding proagent of Doxorubicin (DNA topoisomerase II inhibitor), which is released from albumin under acidic conditions. Aldoxorubicin (INNO-206) has potent antitumor activities in various cancer cell lines and in murine tumor models.
    Aldoxorubicin
  • HY-13631DS
    Dxd-d5
    98.84%
    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].
    Dxd-d<sub>5</sub>
  • HY-16700
    PNU-159682
    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.
    PNU-159682
  • HY-145397
    (4-NH2)-Exatecan
    ≥99.0%
    (4-NH2)-Exatecan, a topoisomerase inhibitor, is a derivative of Exatecan. (4-NH2)-Exatecan can be used in the synthesis of antibody-drug conjugates (ADCs) (US20200306243A1, compound A).
    (4-NH2)-Exatecan
  • HY-15584
    Taltobulin
    99.90%
    Taltobulin (HTI-286), a synthetic analogue of the tripeptide hemiasterlin, is a potent antimicrotubule agent that circumvents P-glycoprotein-mediated resistance in vitro and in vivo. Taltobulin inhibits the polymerization of purified tubulin, disrupts microtubule organization in cells, and induces mitotic arrest, as well as apoptosis.
    Taltobulin
  • HY-W021377
    Exatecan Intermediate 2
    99.95%
    Exatecan Intermediate 2 (compound B) is an intermediate of Exatecan (DX-8951, HY-13631). Exatecan is an anticancer agent belonging to the class of camptothecin analogs. Exatecan interferes with the proliferation and division of tumor cells by interacting with DNA, thereby inhibiting tumor growth. Exatecan is primarily used for research of a variety of cancers including ovarian, lung and breast cancers.
    Exatecan Intermediate 2
  • HY-132180A
    Seco-DUBA
    Seco-DUBA is a duocarmycin (DUBA) prodrug containing two hydroxyl groups, which can each be used for coupling to an antibody via a linker. Seco-DUBA can be used in the synthesis of antibody-drug conjugates (ADCs).
    Seco-DUBA
  • HY-B0154
    Fluticasone (propionate)
    99.97%
    Fluticasone propionate, a potent topical anti-inflammatory corticosteroid, is a selective glucocorticoid receptor agonist, with an absolute affinity (KD) of 0.5 nM. Fluticasone propionate shows little or no activity at other steroid receptors. Anti-viral activity.
    Fluticasone (propionate)
  • HY-15582
    Auristatin E
    99.75%
    Auristatin E is a cytotoxic tubulin modifier with potent and selective antitumor activity; MMAE analog and cytotoxin in antibody-drug conjugates. Auristatin E inhibits cell division by blocking the polymerisation of tubulin.
    Auristatin E
  • HY-14573
    SJG-136
    99.43%
    SJG-136 is a DNA cross-linking agent, with an XL50 of 45 nM for pBR322 DNA. SJG-136 has potent antitumor activity.
    SJG-136
  • HY-129589
    Thailanstatin A
    98.51%
    Thailanstatin A is an ultra-potent inhibitor of eukaryotic RNA splicing (IC50=650 nM). Thailanstatin A exerts effects via non-covalent binding to the SF3b subunit of the U2 snRNA subcomplex of the spliceosome and shows low-nM to sub-nM IC50s against multiple cancer cell lines. Thailanstatin A, a payload for ADCs, is conjugated to the lysines on trastuzumab yielding “linker-less” ADC.
    Thailanstatin A
  • HY-15579A
    MMAF hydrochloride
    99.52%
    MMAF (Monomethylauristatin F) hydrochloride is a potent tubulin polymerization inhibitor and is used as a antitumor agent. MMAF hydrochloride is widely used as a cytotoxic component of antibody-drug conjugates (ADCs) such as Vorsetuzumab mafodotin and SGN-CD19A.
    MMAF hydrochloride
  • HY-107769
    Duocarmycin TM
    98.04%
    Duocarmycin TM (CBI-TMI) is a potent antitumor antibiotic. Duocarmycin TM induces a sequence-selective alkylation of duplex DNA.
    Duocarmycin TM
  • HY-44369
    Exatecan Intermediate 6
    98.92%
    Exatecan Intermediate 6 is the intermediate of Exatecan (HY-13631) And Exatecan (DX-8951) is a DNA topoisomerase I inhibitor with an IC50 value of 2.2 μM (0.975 μg/mL) that can be used in cancer research. Exatecan Intermediate 6 can be used to synthesize Antibody-Drug Conjugates (ADCs).
    Exatecan Intermediate 6
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