Clinical data
AHFS/Drugs.com International Drug Names
ATC code M04AA02 (WHO)
CAS Number 5334-23-6 YesY
PubChem (CID) 667510
ChemSpider 580886
UNII 79F9I2R16M YesY
KEGG D07278 YesY
ECHA InfoCard 100.023.865
Chemical and physical data
Formula C5H4N4S
Molar mass 152.18 g/mol
3D model (Jmol) Interactive image

Tisopurine (or thiopurinol) is a drug used in the treatment of gout in some countries.[1] It reduces uric acid production through inhibiting an early stage in its production.[2]


  1. DEAN, B.M.; PERRETT, D.; SIMMONDS, H.A.; GRAHAME, R (April 1974). "THIOPURINOL: COMPARATIVE ENZYME INHIBITION AND PROTEIN BINDING STUDIES WITH ALLOPURINOL, OXIPURINOL AND 6-MERCAPTOPURINE". British Journal of Clinical Pharmacology. 1 (2): 119–127. doi:10.1111/j.1365-2125.1974.tb00220.x. Retrieved 31 August 2015.
  2. Jawad, A.S.M (1987). "Alternatives to allopurinol" (PDF). Annals of the Rheumatic Diseases. 46: 493. doi:10.1136/ard.46.6.493-a. Retrieved 31 August 2015.

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