L-苯丙氨酸甲酯

D-phenylalanine p-nitrophenyl ester

N-t-butoxycarbonyl-L-phenylalanine anhydride

(2S)-1-benzyl-N-(2-formylphenyl)pyrrolidine-2-carboxamide

(2S)-2-[[(2S)-2-acetamido-3-phenylpropanoyl]amino]-3-(4-hydroxyphenyl)propanoic acid