Similar names: Sulfasalazine; 2-Hydroxy-5-[2-[4-(pyridin-2-ylsulfamoyl)phenyl]diazenyl]benzoic acid; Benzoic acid, 2-hydroxy-5-[2-[4-[(2-pyridinylamino)sulfonyl]phenyl]diazenyl]-Benzoic acid, 2-hydroxy-5-[[4-[(2-pyridinylamino)sulfonyl]phenyl]azo]- (9CI); Salicylic acid, 5-[[p-(2-pyridylsulfamoyl)phenyl]azo]- (6CI,7CI,8CI); 2-Hydroxy-5-((4-((2-pyridinylamino)sulfonyl)phenyl)azo)benzoic acid; 5-[4-(2-Pyridylsulfamyl)phenylazo]-2-hydroxybenzoic acid; 5-[p-(2-Pyridylsulfamoyl)phenylazo]salicylic acid; 5-[p-(2-Pyridylsulfamyl)phenylazo]salicylic acid; Azopyrin; Azopyrine; Azulfidine; Azulfidine EN; Azulfin; Benzosulfa; Colo-Pleon; NSC 203730; NSC 667219; Reupirin; Salazopyridin; Salazopyrin; Salazopyrine; Salazosulfapyridin; Salazosulfapyridine; Salicylazosulfapyridine; Salisulf; Sulfasalazin; Sulfasalazine; Sulphasalazine