Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-110142	2074688-81-4	Impurity
	Linagliptin Impurity 42
	C4X-110143	886588-63-2	Impurity
	Linagliptin Impurity 43
	C4X-110144	N/A	Impurity
	Linagliptin Impurity 44
	C4X-110145	N/A	Impurity
	Linagliptin Impurity 45
	C4X-110146	668273-75-4	Impurity
	Linagliptin Impurity 46
	C4X-110147	2468656-63-3	Impurity
	Linagliptin Impurity 47
	C4X-110148	853029-57-9	Impurity
	Linagliptin Impurity 48
	C4X-110149	N/A	Impurity
	Linagliptin Impurity 49
	C4X-11015	N/A	Impurity
	Linagliptin Impurity 5
	C4X-110150	N/A	Impurity
	Linagliptin Dimer Impurity 6