trisodium 4-amino-3-[[4-[[[4-[(8-amino-1-hydroxy-5-sulphonato-2-naphthyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate;2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(8-amino- 1-hydroxy-5-sulfo-2-naphthalenyl)azo]phenyl]amino ]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo) -, trisodium salt;4-Amino-3-[[4-[[[4-[(8-amino-1-hydroxy-5-sulfo-2-naphthalenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid trisodium salt
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