Entecavir EP Impurity F

Chemical Name: Etecavir USP Impurity H ; 2-amino-9-((1S,3R,4S)-3-((benzyloxy)methyl)-4-(dimethyl(phenyl)silyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one

Synonym: 1-[[p-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido)ethyl]phenyl]sulfonyl]-3-(trans-4-methylcyclohexyl)urea ; methylcyclohexyl)amino]carbonyl]amino]sulfonyl]phenyl]ethyl]-2-oxo-1H-pyrrole-1-carboxyamide

Smile: O=C1C2=C(N([C@]3(C[C@@]([Si](C)(C4=CC=CC=C4)C)([H])[C@@]([H])(COCC5=CC=CC=C5)C3=C)[H])C=N2)N=C(N)N1