has role independent continuant antiviral agent renoprotective agent antifibrotic agent imidazoles azathioprine CHEBI:2948 A thiopurine that is 6-mercaptopurine in which the mercapto hydrogen is replaced by a 1-methyl-4-nitroimidazol-5-yl group. It is a prodrug for mercaptopurine and is used as an immunosuppressant, prescribed for the treatment of inflammatory conditions and after organ transplantation and also for treatment of Crohn's didease and MS. antimetabolite antineoplastic agent thiopurine aryl sulfide immunosuppressive agent C-nitro compound gout suppressant dermatologic drug prodrug carcinogenic agent hepatotoxic agent DNA synthesis inhibitor anti-inflammatory agent anti-anaemic agent