134653-70-6
2-Dimethylaminomethylen-acetessigsaeureethylester
→
~97%
87698-53-1
ethyl 2-(hydroxymethylidene)-3-oxobutanoate
3788-94-1
2-乙氧亚甲基乙酰乙酸乙酯
141-97-9
乙酰乙酸乙酯
2436-79-5
2,4-二甲基吡咯-3,5-二羧酸二乙酯
87698-16-6
(Z)-Ethyl 2-acetyl-5-ethoxy-4-pentenoate
87698-15-5
ethyl 2-acetyl-5-ethoxypent-4-enoate