13877-55-9 1H-Pyrazolo(4,3-d)pyrimidin-7-ol (8CI) 1H-Pyrazolo(4,3-d)pyrimidine-7-one 7-Hydroxypyrazolo(4,3-d)pyrimidine 7-Ketopyrazolo(4,3-d)pyrimidine 7H-Pyrazolo(4,3-d)pyrimidin-7-one, 1,4-dihydro- NSC 79301