7-azanylnaphthalene-2-sulfonic acid, Naphthylamin-(2)-sulfonsaeure-(7), 7-aminonaphthalene-2-sulphonic acid, 8-Brom-7-amino-naphthalin-sulfonsaeure-(2), 2-aminonaphthalene-7-sulphonic acid, 2-Naphthylamine-7-sulfonic acid, 2-naphthylamine-6-sulfonic acid, 7-Amino-naphthalin-2-sulfonsaeure, 7-aminonaphthalene-2-sulfonic acid, 6-amino-3-sulphonaphthalene, 7-Amino-2-naphthalenesulfonic acid, 2-Amino-7-naphthalenesulfonic acid