Z-L-Asp(β-O-t-Bu)-ONb

(S)-4-tert-butyl 1-ethyl 2-(((benzyloxy)carbonyl)amino)succinate

N-Cbz-L-天冬氨酸 1-甲酯

N-benzyloxycarbonyl-L-aspartic anhydride

N-benzyloxycarbonyl-L-aspartic acid α-p-nitrobenzyl ester