DL-叔亮氨酸

(R)-2-benzyloxycarbonylamino-3,3-dimethylbutanenitrile

(R)-3,3-dimethyl-2-((R)-2-oxo-4-phenyloxazolidin-3-yl)butanoic acid

2-hydroxyimino-3,3-dimethylbutanoic acid

D-2-acetylamino-3,3-dimethylbutyric acid 2-chloroethyl ester