5-amino-3-[[4-[5-[(8-amino-1-hydroxy-3,6-disulpho-2-naphthyl)azo]-1H-benzimidazol-2-yl]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonic acid, sodium salt

2,7-Naphthalenedisulfonic acid, 5-amino-3-[[4-[5-[(8-amino- 1-hydroxy-3,6-disulfo-2-naphthalenyl)azo]-1H-benzimidazol -2-yl]phenyl]azo]-4-hydroxy-, sodium salt

5-Amino-3-[[4-[5-[(8-amino-1-hydroxy-3,6-disulfonaphthalene-2-yl)azo]-1H-benzimidazole-2-yl]phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid/sodium,(1:x) salt