1. Signaling Pathways
  2. Antibody-drug Conjugate/ADC Related
  3. 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-100128
    DM1-SMe
    98.16%
    DM1-SMe is an unconjugated form of the Maytansinoid in IMGN901. DM1-SMe is the microtubule inhibitor and can be used as the ADC cytotoxin.
    DM1-SMe
  • HY-N2108
    7-Ethylcamptothecin
    99.58%
    7-Ethylcamptothecin is one of camptothecin analogues. camptothecin (CPT), a cytotoxic alkaloid isolated from Camptotheca acuminata, is shown to have strong antitumor activity against L1210 leukemia and Walker 256 carcinosarcoma models.
    7-Ethylcamptothecin
  • HY-13580R
    Budesonide (Standard)
    99.78%
    Budesonide (Standard) is the analytical standard of Budesonide. This product is intended for research and analytical applications. 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 (Standard)
  • HY-78933
    Fmoc-MMAE
    99.20%
    Fmoc-MMAE is a protective group-conjugated monomethyl auristatin E (MMAE), which is a potent tubulin inhibitor. Fmoc-MMAE can be used in the synthesis of ADC.
    Fmoc-MMAE
  • HY-156617A
    (αR)-Cyclopropaneacetamide-Exatecan
    99.75%
    (αR)-Cyclopropaneacetamide-Exatecan (compound 2-A), an Exenotecan derivative, is a cytotoxic agent. (αR)-Cyclopropaneacetamide-Exatecan inhibits U87MG and SK-BR-3 cells proliferation, with IC50s of 8.11 and 2.31 μM.
    (αR)-Cyclopropaneacetamide-Exatecan
  • HY-160885A
    NH2-Gly-PAB-Exatecan-D-glucuronic acid formic
    99.34%
    NH2-Gly-PAB-Exatecan-D-glucuronic acid formic (Compound 8) is the formic salt form of H2N-Gly-PAB-Exatecan-D-glucuronic acid. H2N-Gly-PAB-Exatecan-D-glucuronic acid formic is an intermediate, which reacts with NHS group to form drug-linker conjugate for ADC, Mal-Gly-PAB-Exatecan-D-glucuronic acid (HY-153179).
    NH2-Gly-PAB-Exatecan-D-glucuronic acid formic
  • HY-126663
    N-Me-L-Ala-maytansinol
    99.89%
    N-Me-L-Ala-maytansinol is a hydrophobic, cell permeable payload used for making antibody-drug conjugate (ADC).
    N-Me-L-Ala-maytansinol
  • HY-15579B
    MMAF sodium
    99.59%
    MMAF sodium (Monomethylauristatin F sodium) is a potent tubulin polymerization inhibitor and is used as a antitumor agent. MMAF sodium (Monomethylauristatin F sodium) is widely used as a cytotoxic component of antibody-drug conjugates (ADCs) such as Vorsetuzumab mafodotin and SGN-CD19A.
    MMAF sodium
  • HY-N0446
    10-Methoxycamptothecin
    99.03%
    10-Methoxycamptothecin is a natural bioactive derivative of camptothecin (CPT) isolated from Camptotheca acuminata, and has been confirmed to possess high anti-cancer properties. 10-Methoxycamptothecin has higher cytotoxicity than 10-hydroxycamptothecin by testing antitumor activity against 2774 cell lines.
    10-Methoxycamptothecin
  • HY-14648R
    Dexamethasone (Standard)
    Dexamethasone (Standard) is the analytical standard of Dexamethasone. This product is intended for research and analytical applications. 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 (Standard)
  • HY-117371
    Hemiasterlin
    99.77%
    Hemiasterlin ((-)-Hemiasterlin) is an antimitotic marine natural product with potent anticancer effcts. Hemiasterlin can be used as a cytotoxic payload (ADC Cytotoxin) in antibody-drug conjugates (ADCs).
    Hemiasterlin
  • HY-156513
    7-Hydroxyethyl carbamate-(10Me-11F-Camptothecin)
    98.88%
    7-Hydroxyethyl carbamate-(10Me-11F-Camptothecin) is a Camptothecin (HY-16560) analogue. 7-Hydroxyethyl carbamate-(10Me-11F-Camptothecin) is a ADC cytotoxin that can be used for synthesis of ADCs, and for cancer research.
    7-Hydroxyethyl carbamate-(10Me-11F-Camptothecin)
  • HY-153797
    Dox-btn2
    Dox-btn2 is a biotinylated derivative of Doxorubicin (HY-15142A), with a biotin label at the point of conjugation to doxorubicin at 3'-NH2. Dox-btn2 can be used for cell imaging. While Doxorubicin is mainly accumulated in the nucleus, while Dox-btn2 is mainly located in the cytoplasm.
    Dox-btn2
  • HY-43564
    Exatecan Intermediate 5
    99.98%
    Exatecan Intermediate 5 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 5 can be used to synthesize Antibody-Drug Conjugates (ADCs).
    Exatecan Intermediate 5
  • HY-15579AS
    MMAF-d8 hydrochloride
    99.70%
    MMAF-d8 (hydrochloride)e is a deuterated form of MMAF hydrochloride, which is a microtubule disrupting agent.
    MMAF-d<sub>8</sub> hydrochloride
  • HY-130082
    DM4-SMe
    99.99%
    DM4-SMe is a metabolite of antibody-maytansin conjugates (AMCs) and a tubulin inhibitor, and also a cytotoxic moiety of antibody-drug conjugates (ADCs), which can be linked to antibody through disulfide bond or stable thioether bond. DM4-SMe inhibits KB cells with an IC50 of 0.026 nM.
    DM4-SMe
  • HY-128914
    Tubulysin
    99.53%
    The Tubulysin family of secondary metabolites was originally isolated from the myxobacteria Archangium geophyra and Angiococcus disciformis. These compounds are potent microtubule destabilizers and anti-microtubule toxins (anti-microtubule toxins), with effective IC50 concentrations against multidrug-resistant cancer cell lines. In the picomole range. Tubulysins are ideal candidates for incorporation into small active molecule conjugate (SMDC) delivery systems and are commonly used in ADC synthesis as ADC cytotoxins (ADC Cytotoxin).
    Tubulysin
  • HY-148870
    Maytansinoid B
    Maytansinoid B is a kind of ADC Cytotoxin. Maytansinoid B can be used to conjugates with antibodies to form antibody-drug conjugates (ADCs). Maytansinoids are known as antimitotic agents, binding to tubulin and inhibiting microtubule assembly. Maytansinoids induces G2/M arrest in the cell cycle to induce apoptosis.
    Maytansinoid B
  • HY-131081
    γ-Amanitin
    γ-Amanitin an ADC cytotoxin and isolated from the mushroom. γ-Amanitin inhibits RNA polymerase II and disrupts synthesis of mRNA. γ-Amanitin shows similar effects to α-Amanitin and β-Amanitin. γ-Amanitin competitively binds to monoclonal antibody (mAb), with an IC50 of 163.1 ng/mL. γ-Amanitin is toxic to a variety of cells.
    γ-Amanitin
  • HY-128873
    Duocarmycin GA
    99.00%
    Duocarmycin GA is an antibody agent conjugates (ADCs) toxin. Duocarmycin is a DNA alkylating agent that binds in the minor groove. Duocarmycin GA can be used against multi-agent resistant cell lines.
    Duocarmycin GA
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