methyl 3-bromo-4,4-dimethoxybut-2-enoate

6-butyl-2-methoxy-2H-pyran-5-one

3,5,5-trimethoxy-2-(2-phenylethyl)cyclopent-2-en-1-one

(9ci)-2-甲氧基-2-环己烯-1-醇

N-丙基甲酰胺