英文别名2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid; 3,5-Pyridinedicarboxylic acid,1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl); 2,6-Dimethyl-3,5-dicarboxy-4-(2-nitrophenyl)-1,4-dihydropyridine; Nifendipine Impurity G; 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid; Nifendipine Impurity 7; Nifedipine-6; Nifedipine Impurity G; 3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)- 
