131043-40-8 2-Afhcp 2-Amino-1,9-dihydro-9-(2-fluoro-4-hydroxy-3-(hydroxymethyl)cyclopentyl)-6H-purin-6-one 6H-Purin-6-one, 2-amino-1,9-dihydro-9-(2-fluoro-4-hydroxy-3-(hydroxymethyl)cyclopentyl)-