ethyl 3-(4-acetyloxy-3,5-dimethoxyphenyl)prop-2-enoate

ethyl 3-[4-(trifluoromethyl)phenyl]prop-2-enoate

3-(2-甲基苯基)丙酸乙酯

丙二酸叔丁基乙酯

氯甲酰乙酸乙酯