1H-Pyrrole-2,4-dicarboxylic acid, 3,5-dimethyl-, diethyl ester 2,4-Dimethyl-3,5-dicarbethoxypyrrole 2436-79-5 Diethyl 3,5-dimethylpyrrole-2,4-dicarboxylate Knorr's pyrrole NSC5685 Pyrrole-2,4-dicarboxylic acid, 3,5-dimethyl-, diethyl ester