EINECS 229-011-0, 6-amino-7-hydroxy-2-naphthalenesulphonic acid, 3-Amino-naphthol-(2)-sulfonsaeure-(7), 6-Amino-7-hydroxy-naphthalin-2-sulfonsaeure, 2-Naphthalenesulfonic acid,6-amino-7-hydroxy, 6-amino-7-hydroxy-naphthalene-2-sulfonic acid, 2-amino-3-hydroxy-6-sulpho-naphthalene, 6-Amino-7-hydroxynaphthalene-2-sulphonic acid