CAS: 142217-69-4 Molecular Formula: C12 H15 N5 O3 Synonym: 6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-∣6H-Purin-6-one, 2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-, [1S-(1α,3α,4β)]-∣BMS 200475∣Baraclude∣Entecavir∣SQ 34676