611-10-9
2-氧代环戊羧酸乙酯
→
6342-78-5
2-(1-ethoxycarbonyl-2-oxocyclopentyl)acetic acid
33668-25-6
3-氧代环己烷甲酸乙酯
25017-79-2
ethyl 3-oxocyclohexene-1-carboxylate