(R)-ethyl 2-bromo-4-phenylbutyrate

N-carbamyl (R)-2-amino-4-phenylbutyric acid

L-脯氨酸叔丁酯

N-[(S)-1-(ethoxycarbonyl)-3-phenylpropyl]-L-alanine tert-butylester

(aS)-a-[[(1S)-1-羧基乙基]氨基]苯丁酸 1-乙酯盐酸盐