Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-107769	N/A	Impurity
	Entecavir Impurity 69
	C4X-10777	188399-46-4	Impurity
	"(1R,3S,4S)-Entecavir"
	C4X-107770	1367369-76-3?free base?	Impurity
	"(1R,3R,4R)-Entecavir HCI"
	C4X-107771	N/A	Impurity
	Entecavir Impurity 71
	C4X-107772	N/A	Impurity
	Entecavir Impurity 72
	C4X-107773	N/A	Impurity
	Entecavir Impurity 73
	C4X-107774	N/A	Impurity
	Entecavir Impurity 74
	C4X-107775	701278-13-9	Impurity
	Entecavir Impurity 75
	C4X-107776	N/A	Impurity
	Entecavir Impurity 76 (Racemic mixture)
	C4X-10778	1367369-78-5	Impurity
	Entecavir EP Impurity A