4-((S)-2-叔-丁氧基羰基氨基-2-甲酯基

methyl (S)-3-[1-(1,1-dimethylethoxycarbonyl)-1H-imidazol-4-yl]-2-[(1,1-dimethylethoxycarbonyl)amino]propionate

(S)-2,5-diamino-4-oxopentanoic acid dihydrochloride

二碳酸二叔丁酯