Entecavir Impurity 7

Chemical Name: 2-amino-9-((1R,3R,4S)-4-(hydroxydimethylsilyl)-3-(hydroxymethyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one

Synonym: oxytetracycline ; (4S,4aR,5S,5aR,6S,12aS) -4-(dimethylamino)-3,5,6,10,11,12a-hexahydroxy -6-methyl-1,12-dioxo-1,4,4a,5,5a,6,12,12a-octahydrotetracene -2-carboxamide