Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-11253	153747-97-8	Impurity
	Palbociclib Impurity 3
	C4X-112530	909712-10-3	Impurity
	Palbociclib Impurity 30
	C4X-112531	733039-20-8	Impurity
	Palbociclib Impurity 31
	C4X-112532	1082876-26-3	Impurity
	Palbociclib Impurity 32
	C4X-112533	1651214-74-2	Impurity
	Palbociclib Impurity 33
	C4X-112537	827022-31-1	Impurity
	Palbociclib Impurity 37
	C4X-112538	2206135-30-8	Impurity
	Palbociclib Impurity 38
	C4X-112539	866084-31-3	Impurity
	Palbociclib Impurity 39
	C4X-11254	1774897-13-0	Impurity
	Palbociclib Impurity 4
	C4X-112540	N/A	Impurity
	Palbociclib Impurity 40