4-Hydroxy-6-mercapto-1H-pyrazolo[3,4-d]pyrimidine, 6-thioxo-1(2),5,6,7-tetrahydro-pyrazolo[3,4-d]pyrimidin-4-one, 4-Hydroxy-6-mercaptopyrazolo[3,4-d]pyrimidine, 1,5,6,7-Tetrahydro-6-thioxo-4H-pyrazolo[3,4-d]pyrimidin-4-one, 6-Mercapto-4-hydroxy-1H-pyrazolo[3,4-d]pyrimidine, 4-HYDROXY-6-MERCAPTOPYRAZOLO-3,4-D)-PYRIMIDINE, F2135-0106, 6-thioxo-1,5,6,7-tetrahydropyrazolo<3,4-d>pyrimidin-4-one, 6-mercapto-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one, 6-Thioxo-1,5,6,7-tetrahydro-pyrazolo[3,4-d]pyrimidin-4-on