L-亮氨酸乙酯盐酸盐

N-苄氧羰基-L-亮氨醇

5-(2-methylpropyl)-3R-phenyl-3,6-dihydro-[1,4]oxazin-2-one

(-)-(R)-(phenyl)(phenylmethoxycarbonylamino)acetic acid 4-methyl-2-oxo-pentyl ester

2-chloro-5-methyl-3-oxo-hexanoic acid methyl ester