(S)-N-叔丁氧羰基-2-吡咯烷酮-5-甲酸叔丁酯

N,N-二环己脲

(2S)-2-amino-5-[2-(2-hydroxyethylsulfanyl)ethoxy]-5-oxopentanoate

(S)-Alpha-氨基-2,3-二氢-4-甲氧基-7-硝基-D-基-1H-吲哚-1-戊酸

2-(叔丁氧羰基氨基)-6-(甲基磺酰氧基)己酸叔丁酯