(2R)-2-[[(2S,3R)-3-amino-2-hydroxy-4-phenylbutanoyl]amino]-4-methylpentanoic acid (2R)-2-[[(2S,3R)-3-amino-2-hydroxy-4-phenyl-butanoyl]amino]-4-methyl-pentanoic acid (2R)-2-[[(2S,3R)-3-amino-2-hydroxy-1-oxo-4-phenylbutyl]amino]-4-methylpentanoic acid (2R)-2-[[(2S,3R)-3-amino-2-hydroxy-4-phenyl-butanoyl]amino]-4-methyl-valeric acid 58970-76-6 NCGC00161660-01 Bestatin (TN) D00087 Ubenimex (JAN/INN) UPCMLD-DP116:001 C00732 Ubenimex