3H-Purin-6-ol 6-Hydroxy-1H-purine 6-Hydroxypurine 6-Oxopurine 68-94-0 6H-Purin-6-one, 1,7-dihydro- 9H-Purin-6(1H)-one 9H-Purin-6-ol HYPOXANTHINE Hypoxanthine enol NSC14665 Purin-6(1H)-one Purin-6(3H)-one Purin-6-ol Sarcine Sarkin Sarkine