CAS 870640-62-3 appears in our catalog under these names: Monomethyl auristatin E intermediate–11, Monomethyl auristatin E intermediate-11, 98%, 98%, (2S,3S)-2-(benzyl(methyl)amino)-3-methylpentan-1-ol, 98%, Monomethyl auristatin E intermediate-11, 98.80%. Offered by: GLPBio, Chemat, Fluorochem, MedChemExpress. Available pack sizes: 1g, 100mg, 250mg, 50mg, 250 mg, 1 g, 100 mg, 50 mg.