2-Propenoic acid, 3-(1H-imidazol-4-yl)-, ethyl ester 27538-35-8 3-(1H-Imidazol-4-yl)-2-propenoic acid, ethyl ester EINECS 248-515-1 Ethyl 3-(1H-imidazol-4-yl)acrylate Ethyl urocanate