Synonyms: 3,5-Pyridinedicarboxylicacid, 1,4-dihydro-2,6-dimethyl-4-(4-nitrophenyl)-, dimethyl ester (9CI);3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(p-nitrophenyl)-,dimethyl ester (8CI);1,4-Dihydro-2,6-dimethyl-4-(4-nitrophenyl)-3,5-pyridinedicarboxylic aciddimethyl ester; 4-(4-Nitrophenyl)-2,6-dimethyl-3,5-dimethoxycarbonyl-1,4-dihydropyridine;Dimethyl 4-(p-nitrophenyl)-2,6-dimethyl-1,4-dihydro-3,5-pyridinedicarboxylate