1-(N-benzyloxycarbonyl-L-phenylalanyl)-2-acetylhydrazine
H-Phe-NHNHCOCH3
{[(S)-2-(N'-Acetyl-hydrazino)-1-benzyl-2-oxo-ethylcarbamoyl]-methyl}-carbamic acid benzyl ester
(R)-2-(N-benzyloxycarbonylamino)pentanoic acid
N-[(S)-2-(N'-Acetyl-hydrazino)-1-benzyl-2-oxo-ethyl]-2-amino-acetamide
[(S)-1-[(R)-1-({[(S)-2-(N'-Acetyl-hydrazino)-1-benzyl-2-oxo-ethylcarbamoyl]-methyl}-carbamoyl)-butylcarbamoyl]-2-(4-hydroxy-phenyl)-ethyl]-carbamic acid benzyl ester
(R)-2-[(S)-2-Amino-3-(4-hydroxy-phenyl)-propionylamino]-pentanoic acid {[(S)-2-(N'-acetyl-hydrazino)-1-benzyl-2-oxo-ethylcarbamoyl]-methyl}-amide
(R)-2-Amino-pentanoic acid {[(S)-2-(N'-acetyl-hydrazino)-1-benzyl-2-oxo-ethylcarbamoyl]-methyl}-amide