Oxypurinol

Oxypurinol
Preferred IUPAC name 1,2-Dihydropyrazolo[4,3-e]pyrimidine-4,6-dione
Systematic name 1H,2H,4H,5H,6H-pyrazolo[3,4-d]pyrimidine-4,6-dione
Other names 1H,2H,5H-pyrazolo[3,4-d]pyrimidine-4,6-dione Alloxanthine
Identifiers
CAS number	2465-59-0
PubChem	4644 Y
ChemSpider	4483 Y
UNII	G97OZE5068
EC number	219-570-9
KEGG	C07599
MeSH	Oxypurinol
ChEBI	CHEBI:28315
ChEMBL	CHEMBL859 Y
Beilstein Reference	139956
Jmol-3D images	Image 1
SMILES O=C1NC(=O)C2=CNNC2=N1
InChI InChI=1S/C5H4N4O2/c10-4-2-1-6-9-3(2)7-5(11)8-4/h1H,(H3,6,7,8,9,10,11) Key: HXNFUBHNUDHIGC-UHFFFAOYSA-N
Properties
Molecular formula	C5H4N4O2
Molar mass	152.11086
Appearance	white crystals
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Oxypurinol is an inhibitor of xanthine oxidase. It is an active metabolite of allopurinol and it is cleared renally. In cases of renal disease, this metabolite will accumulate to toxic levels.

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