1-(N-benzyloxycarbonyl-L-phenylalanyl)-2-acetylhydrazine
H-Phe-NHNHCOCH3
[(R)-1-({[(S)-2-(N'-Acetyl-hydrazino)-1-benzyl-2-oxo-ethylcarbamoyl]-methyl}-carbamoyl)-butyl]-carbamic acid benzyl ester
Z-D-Nva-ONB
{[(S)-2-(N'-Acetyl-hydrazino)-1-benzyl-2-oxo-ethylcarbamoyl]-methyl}-carbamic acid benzyl ester