4-amino-3,6-bis[(4-aminophenyl)azo]-5-hydroxynaphthalene-2,7-disulphonic acid

4-amino-3,6-bis[(4-aminophenyl)azo]-5-hydroxynaphthalene-2,7-disulphonic acid · CAS 56405-32-4

4-amino-3,6-bis[(4-aminophenyl)azo]-5-hydroxynaphthalene-2,7-disulphonic acid