Diethyl 2-methyl-4,5-dioxo-1,3-cyclopentanecarboxylate, 1,3-Cyclopentanedicarboxylic acid,2-methyl-4,5-dioxo-,diethyl ester, EINECS 245-390-5, 1.2-Dioxo-4-methyl-cyclopentan-3.5-dicarbonsaeure-diaethylester, 2-Methyl-4,5-dioxo-cyclopentan-1,3-dicarbonsaeure-diaethylester, 2-methyl-4,5-dioxo-cyclopentane-1,3-dicarboxylic acid diethyl ester, 1,3-Cyclopentanedicarboxylic acid,2-methyl-4,5-dioxo-,1,3-diethyl ester, Diethyl 4,5-dioxo-2-methyl-1,3-cyclopentanedicarboxylate