Chemical Name: (S)-N-((3R,4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino)-1-methoxy-2-methyl-3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan-4-yl)-N,3-dimethyl-2-((S)-3-methyl-2-(methylamino)butanamido)butanamide
Molecular Weight: 717.98
Formula: C39H67N5O7
CAS: 474645-27-7
Solubility: DMSO up to 20 mM

Monomethyl Auristatin E is a dolastatin-10 peptide derivative with potent antimitotic activity and potential antineoplastic activity as part of an antibody-drug conjugate (ADC). Monomethyl auristatin E (MMAE) binds to tubulin, blocks tubulin polymerization, and inhibits microtubule formation, which results in both disruption of mitotic spindle assembly and arrest of tumor cells in the M phase of the cell cycle. To minimize toxicity and maximize efficacy, MMAE is conjugated, via a cleavable peptide linker, to a monoclonal antibody that specifically targets a patient’s tumor. The linker is stable in the extracellular milieu but is readily cleaved to release MMAE following binding and internalization of the ADC by the target cells.