599-79-1 AIDS-059756 AIDS059756 Accucol Asulfidine Benzoic acid, 2-hydroxy-5-((4-((2-pyridinylamino)sulfonyl)phenyl)azo)- NSC203730 NSC667219 Salicylazosulfapyridine Sulcolon Sulfasalazine Sulphasalazine