H-GLU-VAL-OH

N-cyclohexylcyclohexanamine,5-oxo-5-phenylmethoxy-4-(phenylmethoxycarbonylamino)pentanoic acid

(4S)-4-铵基-5-苯胺基-5-氧代戊酸酯

methyl (S)-2-benzyloxycarbonylamino-6-diazo-5-oxohexanoate