Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-119127	104458-24-4	Impurity
	Lapatinib Impurity 27
	C4X-119128	443882-99-3	Impurity
	Lapatinib Impurity 28
	C4X-119129	27329-70-0	Impurity
	Lapatinib Impurity 29
	C4X-11913	59404-86-3	Impurity
	Lapatinib Impurity 3
	C4X-119132	N/A	Impurity
	Lapatinib Impurity 32 (p-Toluenesulfonic acid)
	C4X-119133	N/A	Impurity
	Lapatinib Impurity 33 (p-Toluenesulfonic acid)
	C4X-119134	1807733-95-4	Impurity
	Lapatinib Impurity 34
	C4X-119135	1227853-06-6	Impurity
	Lapatinib Impurity 35
	C4X-119136	N/A	Impurity
	Lapatinib impurity 36
	C4X-119137	1268997-70-1	Impurity
	Lapatinib Impurity 37