title: Active therapeutic moiety of sulphasalazine.
mesh_terms: D000636:Aminosalicylic Acids / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D006801:Humans; D010919:Placebos; D011349:Proctitis / Q000188:drug therapy*; D011897:Random Allocation; D013424:Sulfanilamides / Q000627:therapeutic use*; D013427:Sulfapyridine / Q000627:therapeutic use*; D012460:Sulfasalazine / Q000627:therapeutic use*
chemical_list: D000636:Aminosalicylic Acids; D010919:Placebos; D013424:Sulfanilamides; D012460:Sulfasalazine; D013427:Sulfapyridine