2,2-di(4-Methacryloxyphenyl)propane 2-Propenoic acid, 2-methyl-, (1-methylethylidene)di-4,1-phenylene ester 3253-39-2 4,4'-Isopropylidenediphenol dimethacrylate 4,4'-Isopropylidenediphenyl dimethacrylate Bisphenol A dimethacrylate EINECS 221-846-9