4-Hydroxy-3-(2-hydroxy-1-naphtylazo)benzenesulfonamide, 4-hydroxy-3-(2-hydroxy-[1]naphthylazo)-benzenesulfonic acid amide, Einecs 240-486-3, Benzenesulfonamide,4-hydroxy-3-((2-hydroxy-1-naphthalenyl)azo), 4-Hydroxy-3-(2-hydroxy-[1]naphthylazo)-benzolsulfonsaeure-amid, Benzenesulfonamide,4-hydroxy-3-(2-(2-hydroxy-1-naphthalenyl)diazenyl), 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]benzenesulfonamide, 4-hydroxy-3-[(2-hydroxy-1-naphthalenyl)azo]-Benzenesulfonamide, 4-hydroxy-3-[(2-hydroxy-1-naphthalenyl)azo]-benzenesulfonamid