英文别名Clevidipine Impurity 8; Clevidipine Impurity G; 4-(2,3-Dichlorophenyl)-2,6-dimethyl-3-pyridinecarboxylic acid methyl ester; methyl 4-(2,3-dichlorophenyl)-2,6-dimethylpyridine-3-carboxylate; Clevidipine Impurity J; Clevidipine Butyrate impurity 18