2-Methyl-2-propenoic acid, 3a,4,7,7a-tetrahydro-4,7-methano-1H-indenyl ester 2-Propenoic acid, 2-methyl-, 3a,4,7,7a-tetrahydro-4,7-methano-1H-indenyl ester 3a,4,7,7a-Tetrahydro-4,7-methano-1H-indenyl methacrylate 51178-59-7 95983-85-0 EINECS 257-033-0