N-苄氧羰酰基-D-苯丙氨酸

3-ethoxy-2-methyl-3-oxopropanoic acid

diethyl 2-fluoro-2-phenylpropanedioate

ethyl N-(tert-butylamino)carbamate

4-methyl-3-pyridin-4-yl-1,2,4-oxadiazol-5-one