1-(m-Tolylazo)-naphthol-(2)-sulfonsaeure-(6)

5-(3-Chloro-phenylazo)-6-hydroxy-naphthalene-2-sulfonic acid

3-(2-hydroxy-6-sulfo-[1]naphthylazo)-benzoic acid

1-(m-Methoxyphenylazo)-naphthol-(2)-sulfonsaeure-(6)

6-羟基-5-(2-苯基二氮杂烯)-2-萘磺酸