CAS 203849-91-6 appears in our catalog under these names: MMAD/ 99.91% (existing batch purity), MMAD, MonoMe Auristatin D, Monomethyl Auristatin D 98%, N-Methyl-L-valyl-N-[(1S,2R)-2-methoxy-4-[(2S)-2-[(1R,2R)-1-methoxy-2-methyl-3-oxo-3-[[(1S)-2-phenyl-1-(2-thiazolyl)ethyl]amino]propyl]-1-pyrrolidinyl]-1-[(1S)-1-methylpropyl]-4-oxobutyl]-N-methyl-L-valinamide, 98%, 98%. Offered by: TargetMol, GLPBio, Biosynth, Ambeed, Chemat. Available pack sizes: 5mg, 10mg, 50mg, 100mg, 25mg, 250mg, 1mg, 100 mg.