英文别名Lercanidipine Impurity 5; 3-Pyridinecarboxylic acid, 5-(chlorocarbonyl)-1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-, methyl ester; Nicardipine Impurity 22; 5-(Chlorocarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid methyl ester; 1,4-dihydro-2,6-dimethyl-3-methoxycarbonyl-4-(3-nitrophenyl)-pyridine-5-carboxylic acid chloride; 2,6-dimethyl-5-methoxycarbonyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid chloride; 2,6-dimethyl-3-carbomethoxy-4-(3-nitrophenyl)-5-chlorocarbonyl-1,4-dihydropyridine; 2,6-dimethyl-5-methoxycarbonyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carbonyl chloride 
