3,3-Dimethyl-4-pentenoic acid, ethyl ester 4-Pentenoic acid, 3,3-dimethyl-, ethyl ester 7796-72-7 EINECS 232-250-3 Ethyl 3,3-dimethyl-4-pentenoate Ethyl 3,3-dimethylpent-4-en-1-oate