5-(1-hydroxybutylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione

3-乙基苯并吡喃-2-酮

2,4-dimethoxy-1-phenylbutan-1-one

1-diethoxyphosphorylpentan-2-one

S-(2-acetamidoethyl) butanethioate