拉帕替尼杂质1

Lapatinib Impurity 1

2,4-二氯丁酸

2,4-dichlorobutanoic acid

2-溴甲基丙烯酸乙酯

ETHYL 2-(BROMOMETHYL)ACRYLATE

2-(溴甲基)-5-氯嘧啶

2-(bromomethyl)-5-chloropyrimidine