112997-71-4 4-((4-((Acetylamino)sulfonyl)phenyl)amino)-4-oxobutanoic acid monoammonium salt BUTANOIC ACID, 4-((4-((ACETYLAMINO)SULFONYL)PHENYL)AMINO)-4-OXO-, MONOAMMONIUM S Butanoic acid, 4-((4-((acetylamino)sulfonyl)phenyl)amino)-4-oxo-, monoammonium salt Succinanilic acid, 4'-(acetylsulfamoyl)-, monoammonium salt