2,2-dimethyl-5-[(4-nitrophenyl)methylidene]-1,3-dioxane-4,6-dione

N-phenacyl-3-methylpyridinium bromide

3-methyl-1-(4-nitrobenzyl)pyridin-1-ium bromide

5-[(4-methoxyphenyl)methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

环对甲基亚苄基丙二酸-2,2-丙二醇