4-Hydroxypyrazolo-[3,4-d]-pyrimidine4-Hydroxypyrazolo(3,4-d)pyrimidineALLOPURINOL4-Hydroxypyrazolo[3,4-d]pyrimidine1H-Pyrazolo(3,4-d)pyrimidin-4-olHPPallo PURINOL1H-Pyrazolo[3,4-d]pyrimidin-4-ol1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one4-羟基吡唑并[3,4-d]嘧啶Allopurinol4-Hydroxy-1H-pyrazolo[3,4-d]pyrimidine4'-Hydroxypyrazolol(3,4-d)pyrimidineAllopurinolum4H-Pyrazolo(3,4-d)pyrimidin-4-one4-HPP4-Hydroxypyrazolyl(3,4-d)pyrimidineZyloprim (TN)4-Hydroxypyrazolo(3,4-d)pyrimidine1,5-Dihydro-4H-pyrazolo(3,4-d)pyrimidine-4-one4-Hydroxy-3,4-pyrazolopyrimidine4-HydroxypyrazolopyrimidineAlopurinolAL-100Allopurinol4-Hydroxy-1H-pyrazolo(3,4-d)pyrimidine1,5-Dihydro-4H-pyrazolo(3,4-d)pyrimidin-4-oneallopurinol1H-Pyrazolo(3,4-d)pyrimidin-4-ol