disodium 5-(benzoylamino)-4-hydroxy-3-[[2-(2-methylphenoxy)phenyl]azo]naphthalene-2,7-disulphonate

5-(Benzoylamino)-4-hydroxy-3-[2-(2-methylphenoxy)phenylazo]-2,7-naphthalenedisulfonic acid disodium salt

2,7-Naphthalenedisulfonic acid, 5-(benzoylamino)-4-hydroxy-3-2-(2-methylphenoxy)phenylazo-, disodium salt