Ethyl trans-4-Oxobutenoate, is an intermediate used in the synthesis of various pharmaceutically active molecules. It can also be used in the asymmetric catalytic alkynylation of acetaldehyde, producing attractive synthons with broad applications, such as (+)-Tetrahydropyrenophorol.

CAS：2960-66-9
中文别名：反式-4-氧代-2-丁烯酸乙酯;
英文别名：ethyl fumaraldehydate;(E)-Ethyl 4-oxobut-2-enoate;ETHYL TRANS-4-OXO-2-BUTENOATE;(2E)-4-oxo-2-butenoic acid ethyl ester;Ethyl 3-formylacrylate~Ethyl fumaraldehydate~trans-4-Oxo-2-butenoic acid ethyl ester;ethyl 3-formylacrylate;Ethyl trans-4-oxo-2-butenoate;Ethyl 4-oxobut-2-enoate;(E)-4-oxobut-2-enoic acid ethyl ester;4-oxo-but-2-enoic acid ethyl ester;4-oxocrotonic acid ethyl ester;
分子式：C6H8O3
分子量：128.126
精确质量：128.047
Psa：43.37
Logp：0.3046

MDL号：MFCD00236170

密度：1.063
沸点：184-188ºC
熔点：-9ºC
闪点：78.6ºC
折射率：1.455
蒸汽压：0.343mmHg at 25°C

安全说明：S23-S36/37/39-S45
危险类别码：R25; R34; R43
危险品运输编码：UN 2927
海关编码：2918300090
包装等级：III