tetrasodium 5-amino-3-[[4-[[4-[(8-amino-1-hydroxy-3,6-disulphonato-2-naphthyl)azo]-3-methoxyphenyl]azo]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate

5-Amino-3-[[4-[[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphtyl)azo]-3-methoxyphenyl]azo]phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid tetrasodium salt

2,7-Naphthalenedisulfonic acid, 5-amino-3-[[4-[[4-[(8-amino- 1-hydroxy-3,6-disulfo-2-naphthalenyl)azo]-3-methoxyphenyl ]azo]phenyl]azo]-4-hydroxy-, tetrasodium salt