英文别名Benidipine Impurity 6; Nicardipine Related Compound 2; Nicardipine Dehydro Carboxylic Acid Impurity; Nicardipine Dehydro Carboxylic Acid Imp; 5-methoxycarbonyl-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3-carboxylic acid; SL 5721; Nicardipine Impurity 4; Nicardipine Impurity 20; 3,5-Pyridinedicarboxylic acid, 2,6-dimethyl-4-(3-nitrophenyl)-, 3-methyl ester; 2,6-Dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylic acid monomethyl ester 
