(1-Methylethylidene)bis(4,1-phenyleneoxy-3,1-propanediyl) bismethacrylate 2,2-Bis-(4-(3-methacryloxypropoxy)phenyl)propane 2-Propenoic acid, 2-methyl-, (1-methylethylidene)bis(4,1-phenyleneoxy-3,1-propanediyl) ester 27689-12-9 EINECS 248-607-1