(1-Methylethylidene)di-4,1-cyclohexanediyl bismethacrylate 2-Propenoic acid, 2-methyl-, (1-methylethylidene)di-4,1-cyclohexanediyl ester 39664-33-0 EINECS 254-571-8 Hydrogenated bisphenol A dimethacrylate