乙基3-[4-(三氟甲基)苯基]丙酸酯

3-氧代-4-间甲苯基-丁酸乙酯

4-(2-甲氧基苯基)-3-氧代丁酸乙酯

ethyl 2-methyl-6-oxocyclohexene-1-carboxylate

3-[(1E)-3-Ethoxy-3-oxo-1-propen-1-yl]benzoic acid