2-氯丙酸

(1'S,5R)-1-(benzyloxycarbonyl)-3-(1'-phenyleth-1'-yl)-5-methylimidazolidin-4-one

N-trichloroacetyl-D-alanine

BOC-DL-丙氨酸

(3R,6R)-1,4-N,N-((S)-1-phenyleth-1-yl)-3,6-dimethylpiperazine-2,5-dione