2-Amino-1-naphthol-4-sulfonsaeure, 1,2,4-AMINONAPHTHOLSULFONIC ACID, 4-AMINO-3-NAPHTHOL-1-SULFONIC ACID, 2-HYDROXY-4-SULFO-1-NAPHTHYLAMINE, 2-amino-1-hydroxy-4-naphthalenesulfonic acid, 2-amino-1-naphthol-4-sulfonic acid, 1-hydroxy-2-aminonaphthalene-4-sulfonic acid, 2-Amino-1-hydroxynaphthalen-4-sulfonsaeure, 3-amino-4-hydroxy-1-naphthalenesulphonic acid, 1-AMINO-2-HYDROXY-4-NAPHTHALENESULFONIC ACID, 1-AMINO-2-HYDROXY-4-SULFONAPHTHALENE, 4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID, 3-amino-4-hydroxynaphthalene-1-sulfonic acid, 1-AMINO-2-NAPHTHOL-4-SULPHONIC ACID