allopurinol1,5-Dihydro-4H-pyrazolo(3,4-d)pyrimidin-4-one1,5-Dihydro-4H-pyrazolo(3,4-d)pyrimidine-4-one1H-Pyrazolo(3,4-d)pyrimidin-4-ol4'-Hydroxypyrazolol(3,4-d)pyrimidine4-HPP4-Hydroxy-1H-pyrazolo(3,4-d)pyrimidine4-Hydroxy-3,4-pyrazolopyrimidine4-Hydroxypyrazolo(3,4-d)pyrimidine4-Hydroxypyrazolopyrimidine4-Hydroxypyrazolyl(3,4-d)pyrimidine4H-Pyrazolo(3,4-d)pyrimidin-4-oneAL-100AllopurinolAllopurinolumAlopurinolZyloprim (TN)