Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-110190	915226-43-6	Impurity
	Linagliptin Impurity 90
	C4X-110191	168749-30-2	Impurity
	Linagliptin Impurity 91
	C4X-110192	168749-30-2	Impurity
	Linagliptin Impurity 92
	C4X-110193	1214903-21-5	Impurity
	Linagliptin Impurity 93
	C4X-110194	168749-30-2(free base)	Impurity
	Linagliptin Impurity 92 D-lactate
	C4X-110197	N/A	Impurity
	Linagliptin impurity 97
	C4X-110198	N/A	Impurity
	Linagliptin impurity 98
	C4X-110199	N/A	Impurity
	Linagliptin impurity 99
	C4X-11021	684286-46-2	Impurity
	Glimepiride impurity A
	C4X-110210	N/A	Impurity
	Glimepiride EP Impurity J