Oxypurinol

Oxypurinol

Names
Preferred IUPAC name 1,2-Dihydropyrazolo[4,3-e]pyrimidine-4,6-dione
Systematic IUPAC 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
Beilstein Reference	139956
ChEBI	CHEBI:28315
ChEMBL	ChEMBL859 Y
ChemSpider	4483 N
EC Number	219-570-9
Jmol 3D model	Interactive image
KEGG	C07599
MeSH	Oxypurinol
PubChem	4644
UNII	G97OZE5068
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
SMILES O=C1NC(=O)C2=CNNC2=N1
Properties
Chemical formula	C5H4N4O2
Molar mass	152.11086
Appearance	white crystals
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 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. By inhibiting xanthine oxidase, it reduces uric acid production. High serum uric acid levels may result in gout, kidney stones, and other medical conditions.