(3,3,4,5,6,6-Hexachloro-4-cyclohexene-1,2-diyl)bis(methylene) bis(2-methyl-2-propenoate) (3,3,4,5,6,6-Hexachloro-4-cyclohexene-1,2-diyl)bismethylene bismethacrylate 2-Propenoic acid, 2-methyl-, (3,3,4,5,6,6-hexachloro-4-cyclohexene-1,2-diyl)bis(methylene) ester 67905-51-5 EINECS 267-672-7