Synonyms: Abacavir tert-butyl ether, N6-Cyclopropyl-9-{(1R,4S)-4-[(1,1-dimethylethoxy)methyl]cyclopent-2-en-1-yl}-9H-purine-2,6-diamine, 6-(Cyclopropylamino)-9-[(1R,4S)-4-[[(1,1-dimethylethyl)oxy]methyl]cyclopent-2-enyl]-9H-purine-2-amine, 9H-Purine-2,6-diamine, N6-cyclopropyl-9-[(1R,4S)-4-[(1,1-dimethylethoxy)methyl]-2-cyclopenten-1-yl]-, N6-Cyclopropyl-9-[(1R,4S)-4-[(1,1-dimethylethoxy)methyl]-2-cyclopenten-1-yl]-9H-purine-2,6-diamine, Abacavir Sulfate Imp. F (Ph. Int.), Abacavir Sulfate Imp F (EP), Abacavir Sulfate Impurity F, Abacavir Impurity F.