Sub Group: Heterocyclic Compounds Catalog Number: 6298 Formula: C5H4N4O CAS Number: 315-30-0 Molecular Weight: 136.11 Synonyms: 1,5-Dihydro-4H-Pyrazolo[3,4-d]pyrimidin-4-one4-Hydroxypyrazolo[3,4-d]pyrimidine4-Oxopyrazolo[3,4-d]pyrimidineAdenockAllopurCapl