3-(N,N-二甲基氨基)丙烯酸乙酯

4-氯苯甲醛

(E)-diethyl 4-(triphenylphosphoranylidene)pent-2-enedioate

ethyl (2E)-4-ethoxycarbonyl-5-ethoxy-2,4-pentadienoate

2-羟基-5-甲基苯乙酮