英文别名1-(1'-hydroxy-2'-naphthylazo)-6-nitro-2-naphthol-4-sulphonic acid; Naphthol-(2)-(1 azo 1)-(6-nitro-naphthol-(2)-sulfonsaeure-(4)); 6-Nitro-2,2''-dihydroxy-[1,1'']azonaphthalin-sulfonsaeure-(4); 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]naphthylazo)-7-nitro-naphthalene-1-sulfonic acid; 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonic acid; 3-Hydroxy-4-(2-hydroxy-1-naphtylazo)-7-nitro-1-naphthalenesulfonic acid; 3-Hydroxy-4-[(2-hydroxy-1-naphtyl)azo]-7-nitronaphthalene-1-sulfonic acid; 1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro- 
