2-((2-Methyl-1-oxoallyl)oxy)ethyl 1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate 4-Meta 4-Methacryloxyethyl trimellitate anhydride 4-Methacryloxyethyltrimellitic acid anhydride 5-ISOBENZOFURANCARBOXYLIC ACID, 1,3-DIHYDRO-1,3-DIOXO-, 2-((2-METHYL-1-OXO-2-PRO 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, 2-((2-methyl-1-oxo-2-propenyl)oxy)ethyl ester 70293-55-9 82052-94-6 85257-14-3 EINECS 274-547-0