2,7-Naphthalenedisulfonic acid, 4-amino-6-4-4-(2,4-diaminophenyl)azophenylaminosulfonylphenylazo-5-hydroxy-3-(4-nitrophenyl)azo-, potassium sodium salt

2,7-Naphthalenedisulfonic acid, 4-amino-6-[[4-[[[4-[(2,4- diaminophenyl)azo]phenyl]amino]sulfonyl]phenyl]azo ]-5-hydroxy-3-[(4-nitrophenyl)azo]-, sodium potassium salt

2,7-Naphthalenedisulfonic acid, 4-amino-6-(2-(4-(((4-(2-(2,4-diaminophenyl)diazenyl)phenyl)amino)sulfonyl)phenyl)diazenyl)-5-hydroxy-3-(2-(4-nitrophenyl)diazenyl)-, potassium sodium salt (1::)