Einecs 262-888-8

4-hydroxy-5-[(2-hydroxynaphthyl)azo]-3-[(2-hydroxy-3-nitro-5-sulphophenyl)azo]naphthalene-2,7-disulphonic acid

4-Hydroxy-5-((2-hydroxynaphthyl)azo)-3-((2-hydroxy-3-nitro-5-sulphophenyl)azo)naphthalene-2,7-disulphonic acid

4-Hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]-3-[(2-hydroxy-3-nitro-5-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid