英文别名6-Methyl-2,4-bis-(2-nitrophenyl)-1,2,3,4-tetrahydropyrimidin-5-carbonsaeuremethylester; Nifedipine Pyrimidine Impurity; Pyrimidine impurity; 5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-6-methyl-2,4-bis(2-nitrophenyl)-, methyl ester, (2R,4R)-rel-; Methyl cis-1,2,3,4-tetrahydro-6-methyl-2,4-bis(2-nitrophenyl)-5-pyrimidinecarboxylate; rel-Methyl(2R,4R)-1,2,3,4-tetrahydro-6-methyl-2,4-bis(2-nitrophenyl)-5-pyrimidinecarboxylate; Nifedipine EP Impurity 7; 5-Pyrimidinecarboxylic acid,1,2,3,4-tetrahydro-6-methyl-2,4-bis(2-nitrophenyl)-, methyl ester, cis-(±)- 
