16170-75-5 16170-76-6 2-Butenoic acid, 3-bromo-4-(4-methoxyphenyl)-4-oxo- 3-p-Anisoyl-3-bromacrylsaeure 3-p-Anisoyl-3-bromoacrylic acid Acrylic acid, 3-p-anisoyl-3-bromo- beta-(4-Methoxybenzoyl)-beta-bromoacrylic acid