has role has parent hydride independent continuant antitubercular agent antimetabolite antipsychotic agent hypoglycemic agent antineoplastic agent EC 1.17.3.2 (xanthine oxidase) inhibitor antihypertensive agent gout suppressant pyrazolopyrimidine allopurinol CHEBI:40279 A bicyclic structure comprising a pyrazole ring fused to a hydroxy-substituted pyrimidine ring. radical scavenger 1H-pyrazolo[4,3-d]pyrimidine hepatoprotective agent anti-inflammatory agent nucleobase analogue antileishmanial agent vulnerary anti-obesity agent