trans-Urocaninsaeure-methylester Hydrochlorid, 3-(1H-imidazol-4-yl)acrylic acid methyl ester hydrochloride, EINECS 259-047-2, Methyl (E)-3-(1H-imidazol-4-yl)acrylate monohydrochloride, trans-4-imidazoleacrylic acid methyl ester hydrochloride, methyl (E)-3-(1H-imidazol-5-yl)prop-2-enoate hydrochloride, (E)-Methyl urocanate hydrochlorid, 3-(1H-imidazol-4-yl)acrylic acid methyl ester monohydrochloride, methyl 3-(imidazol-4-yl)acrylate hydrochloride