3-Hydroxy-4-(2-hydroxy-[1]naphthylazo)-7-nitro-naphthalin-1-sulfonsaeure, 3-HYDROXY-4-((2-HYDROXYNAPHTHYL)AZO)-7-NITRONAPHTHALENE-1-SULPHONIC ACID, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonic acid, 6-Nitro-2.2''-dihydroxy-[1.1'']azonaphthalin-sulfonsaeure-(4), 3-hydroxy-4-(2-hydroxy-[1]naphthylazo)-7-nitro-naphthalene-1-sulfonic acid, 3-Hydroxy-oestra-1,3,5(10)-trien-17-on, Naphthol-(2)-(1 azo 1)-(6-nitro-naphthol-(2)-sulfonsaeure-(4))