Monomethylauristatin F （MMAF）

Chemical Name: (S)-2-((2R,3R)-3-((S)-1-((3R,4S,5S)-4-((S)-N,3-dimethyl-2-((S)-3-methyl-2-(methylamino)butanamido)butanamido)-3-methoxy-5-methylheptanoyl)pyrrolidin-2-yl)-3-methoxy-2-methylpropanamido)-3-phenylpropanoic acid Molecular Weight: 731.96 Formula: C39H65N5O8 CAS#: 141205-32-5 Solubility: DMSO up to 20 mM Biological Activity Monomethyl auristatin F (MMAF) or desmethyl-auristatin F is an anti-tubulin agent that inhibits cell division by blocking the polymerization of tubulin. It is a new auristatin derivative with a charged C-terminal phenylalanine that attenuates its cytotoxic activity compared to its uncharged counterpart, monomethyl auristatin E (MMAE). In addition, the N-terminal amino group has only one methyl substituent instead of two as in auristatin F itself.