Synonyms: Benzenesulfonamide, 4-hydrazinyl-, hydrochloride (1:1), (4-Sulfamoylphenyl)hydrazine Hydrochloride, Benzenesulfonamide, 4-hydrazino-, monohydrochloride (9CI), Benzenesulfonamide, p-hydrazino-, monohydrochloride (8CI), (4-Sulfamoylphenyl)hydrazine hydrochloride, (p-Sulfamoylphenyl)hydrazine monohydrochloride, 4-Aminosulfonylphenylhydrazine monohydrochloride, 4-Hydrazinobenzene-1-sulfonamide hydrochloride, 4-Hydrazinobenzenesulfonamide monohydrochloride, 4-Hydrazinylbenzenesulfonamide hydrochloride, [4-(Aminosulfonyl)phenyl]hydrazine hydrochloride