1,4-Cyclohexanedicarboxylic acid, 2,5-dioxo-, dimethyl ester 6289-46-9 AI3-14663 Dimethyl 2,5-dioxo-1,4-cyclohexanedicarboxylate Dimethyl 2,5-dioxocyclohexane-1,4-dicarboxylate Dimethyl succinylsuccinate EINECS 228-528-9 NSC 122567 NSC 5670 Succinosuccinic acid, dimethyl ester