sodium 6-amino-5-[[4-chloro-2-(2-chlorophenoxy)phenyl]azo]-4-hydroxynaphthalene-2-sulphonate

6-Amino-5-[4-chloro-2-(2-chlorophenoxy)phenylazo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt

2-Naphthalenesulfonic acid, 6-amino-5-[[4-chloro-2-(2- chlorophenoxy)phenyl]azo]-4-hydroxy-, monosodium salt