2,2-dimethyl-5-oxo-1,3-dioxolane-4-carboxylic acid

methyl 2,2-dimethyl-5-oxo-1,3-dioxolane-4-carboxylate

2,2-dimethyl-4,6-dioxo-5-methoxy-1,3-dioxane

2,2-二甲基-5-(2-四氢吡咯亚基

2,2-二甲基-5-(2-哌啶基亚基)-1,3-二恶烷-4,6-二酮