拉西地平杂质

　　拉西地平杂质A 　　Lacidipine Impurity A 　　Ethyl methyl (E)-4-{2-[2-(tert-butoxycarbonyl)vinyl]phenyl}-1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate 　　拉西地平杂质B 　　Lacidipine Impurity B 　　Diethyl (E)-4-{2-[2-(tert-butoxycarbonyl)vinyl]phenyl}-2,6-dimethylpyridine-3,5-dicarboxylate 　　拉西地平杂质C 　　Lacidipine Impurity C 　　Diethyl (Z)-4-{2-[2-(tert-butoxycarbonyl)vinyl]phenyl}-1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate