13877-56-0 1H-Pyrazolo(4,3-d)pyrimidin-7-amine 1H-Pyrazolo(4,3-d)pyrimidin-7-amine (9CI) 1H-Pyrazolo(4,3-d)pyrimidine, 7-amino- (8CI) 7-Aminopyrazolo(4,3-d)-pyrimidine 7-Aminopyrazolo(4,3-d)pyrimidine NSC 81390