diethyl 3-methylhexanedioate

methyl 4,4-dimethoxypentanoate

ethyl 5-cyano-4-methylpentanoate

4-(羟基亚胺)戊酸乙酯

(2R,4R)-3-(2-bromo-4,4-difluoro-1-oxopentyl)-4-(phenylmethyl)-2-oxazolidinone