1H-Pyrazolo[3,4-d]pyrimidine, 4-(propylamino)- 1H-Pyrazolo[3,4-d]pyrimidine, 4-propylamino- 4-Propylamino-1H-pyrazolo[3,4-d]pyrimidine 4-n-Propylamino-1H-pyrazolo(3,4-d)pyrimidine 5401-46-7 M 57 NSC4928 PAPP