1,1-Dimethylethyl 2-methyl-2-propenoate 2-Propenoic acid, 2-methyl-, 1,1-dimethylethyl ester 4-02-00-01526 (Beilstein Handbook Reference) 585-07-9 BRN 1746394 CCRIS 7039 EINECS 209-548-7 Methacrylic acid, tert-butyl ester NSC 20957 T-BUTYL METHACRYLATE tert-Butyl methacrylate