2. Signaling Pathways
  3. Antibody-drug Conjugate/ADC Related
  4. ADC Payload

ADC Cytotoxin

ADC Payload

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ADC 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 payload. The payload is the most important component as it determines the potency to kill cancer cells of an ADC.

There are many payloads 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.

ADC Payload Isoform Specific Products:

ADC Payload Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-102001
    Tomaymycin DM
    Tomaymycin DM is a tomaymycin derivative, PBD monomer, and DNA alkylating agent. Tomaymycin DM can serve as a payload in tumor-targeting antibody-conjugated active molecules (ADCs).
    Tomaymycin DM
  • HY-43565B
    Exatecan intermediate 10
    		99.91%
    Exatecan intermediate 10 is an intermediate in the synthesis of Exatecan (HY-13631).Exatecan (DX-8951) is a DNA topoisomerase I inhibitor with an IC50 of 2.2 μM (0.975 μg/mL) for use in cancer research.
    Exatecan intermediate 10
  • HY-W021377A
    Exatecan Intermediate 2 hydrochloride
    		99.94%
    Exatecan Intermediate 2 hydrochloride (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 hydrochloride
  • HY-46081
    Exatecan Intermediate 3
    		99.83%
    Exatecan Intermediate 3 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 3 can be used to synthesize Antibody-Drug Conjugates (ADCs).
    Exatecan Intermediate 3
  • HY-45157
    Exatecan Intermediate 7
    Exatecan Intermediate 7 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 7 can be used to synthesize Antibody-Drug Conjugates (ADCs).
    Exatecan Intermediate 7
  • HY-78913
    Monomethyl auristatin E intermediate-14
    		Control 98.55%
    Monomethyl auristatin E intermediate-14 is an intermediate reagent in the synthesis of Monomethyl auristatin E (HY-15162). Monomethyl auristatin E (MMAE) is a microtubule/tubulin inhibitor with anticancer activity. MMAE is widely used as the cytotoxic component (ADC Cytotoxin) of antibody-drug conjugates (ADCs).
    Monomethyl auristatin E intermediate-14
  • HY-15582S
    Auristatin E-d8
    		99.48%
    Auristatin E-d8 is the deuterium labeled Auristatin E (HY-15582). Auristatin E is a cytotoxic microtubule polymerization inhibitor with potent and selective antitumor activity. Auristatin E is a cytotoxin in antibody-drug conjugates (ADC). Auristatin E inhibits cell division by blocking the polymerisation of tubulin, promising for research in B-cell malignancies. Auristatin E, a synthetic analogue of the Dolastatin 10 (HY-15580), is linear peptides comprised of four amino acids.
    Auristatin E-d<sub>8</sub>
  • HY-130080
    DM3
    DM3 (Maytansinoid DM3), a Maytansine (HY-13674) analog bearing disulfide or thiol groups, and is a tubulin inhibitor. DM3 a cytotoxic moiety of antibody-drug conjugates (ADCs).
    DM3
  • HY-177267
    Camptothecin derivative-3
    		99.90%
    Camptothecin derivative-3 (Compound 11) is a derivative of Camptothecin (HY-16560) and can serve as a payload for ADCs. Camptothecin derivative-3 has certain cytotoxicity, with IC50 values of 2 nM and 0.9 nM against HSC-2 and Namalwa/luc cells, respectively. Camptothecin derivative-3 can be used in tumor-related research.
    Camptothecin derivative-3
  • HY-145397S
    (4-NH2)-Exatecan-d5
    		98.62%
    (4-NH2)-Exatecan-d5 is a deuterated labeled (4-NH2)-Exatecan. (4-NH2)-Exatecan (compound A), a topoisomerase inhibitor, is a derivative of Exatecan. (4-NH2)-Exatecan can be used in the synthesis of antibody-drug conjugates (ADCs).
    (4-NH2)-Exatecan-d<sup>5</sup>
  • HY-153469
    Benzyl DC-81
    Benzyl DC-81 (Compound 6a) is an anticancer agent with antiproliferative activity against A375 and MCF-7 cells.
    Benzyl DC-81
  • HY-156849
    Exatecan-methylacetamide-OH
    Exatecan-methylacetamide-OH (compound 6) is a Exatecan derivative with anticancer effects. Exatecan-methylacetamide-OH is an ADC cytotoxin that can be used to synthesize Antibody-Drug Conjugates (ADCs) (CN112125915A; compound 6).
    Exatecan-methylacetamide-OH
  • HY-14648S5
    Dexamethasone-d3-1
    		98.02%
    Dexamethasone-d3-1 (Hexadecadrol-d3-1; Prednisolone F-d3-1) is a deuterium labeled Dexamethasone (HY-14648). Dexamethasone (Hexadecadrol) 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-d<sub>3</sub>-1
  • HY-150401
    Exatecan-amide-cyclopropanol
    		98.57%
    Exatecan-amide-cyclopropanol (compound 1) is a anticancer agent. Exatecan-amide-cyclopropanol shows anti-proliferation activity against SK-BR-3 and U87 cells, with IC50 values of 0.12 and 0.23 nM, respectively.
    Exatecan-amide-cyclopropanol
  • HY-156225
    MMAF-OtBu
    		99.83%
    MMAF-OtBu (Example 2) is a modified MMAF (HY-15579 ). MMAF-OtBu can be used for synthesis of ADCs.
    MMAF-OtBu
  • HY-120574
    TH1338
    		98.77%
    TH1338 (compound 3b), an orally active camptothecin derivative and a potent chemotherapeutic agent for cancer, demonstrates excellent cytotoxic potency against human tumor cell lines in vitro. TH1338 (compound 3b) possesses significant brain penetration, favorable efflux pump properties, and hematological toxicity profile.
    TH1338
  • HY-100504
    S-methyl DM1
    		99.58%
    S-methyl DM1 is a thiomethyl derivative of Maytansine. S-methyl DM1 binds to tubulin with a Kd of 0.93 μM and inhibts microtubule polymerization. S-methyl DM1 potently suppresses microtubule dynamic instability and has anticancer effects.
    S-methyl DM1
  • HY-145449A
    CC-885-CH2-PEG1-NH-CH3 TFA
    		99.28%
    CC-885-CH2-PEG1-NH-CH3 TFA is a new degrader that can be used to synthesize antibody-based novel degrader conjugated active molecules (AnDC). CC-885-CH2-PEG1-NH-CH3 TFA is the toxic molecule of ADC, which can specifically degrade the target protein in cancer cells through the E3 ubiquitin ligase pathway.
    CC-885-CH2-PEG1-NH-CH3 TFA
  • HY-W021377C
    Exatecan Intermediate 4 dihydrochloride
    		99.92%
    Exatecan Intermediate 4 dihydrochloride (Compound 14f) 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 4 dihydrochloride
  • HY-48564
    TAM558 intermediate-5
    TAM558 intermediate-54 is an intermediate in the synthesis of TAM558 (HY-148127).TAM558 is the payload molecule used in the synthesis of OMTX705.OMTX705 is a humanized anti-fibroblast activation protein (FAP) antibody that binds to the cytolysin TAM470 (HY-148128) and has anti-tumor activity.
    TAM558 intermediate-5
Cat. No. Product Name / Synonyms Application Reactivity
ADC Payload Isoform Comparison

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