Synonyms: 3,5-Pyridinedicarboxylicacid, 1,4-dihydro-2,6-dimethyl-4-(4-nitrophenyl)-, diethyl ester (9CI);3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(p-nitrophenyl)-,diethyl ester (7CI,8CI);1,4-Dihydro-2,6-dimethyl-4-(4-nitrophenyl)-3,5-pyridinedicarboxylic aciddiethyl ester; 2,6-Dimethyl-3,5-bis(ethoxycarbonyl)-4-(p-nitrophenyl)-1,4-dihydropyridine;4-(4'-Nitrophenyl)-3,5-diethoxycarbonyl-2,6-dimethyl-1,4-dihydropyridine