甘氨酰-L-组氨酸

N-乙酰基-DL-组织氨基酸

H-His(MBS)-OH

benzyl L-2-benzyloxycarbonylamino-5-diazo-4-oxopentanoate

benzyl L-2-benzyloxycarbonylamino-5-chloro-4-oxopentanoate