disodium 3-[[5-chloro-2-(phenylmethoxy)phenyl]azo]-4-hydroxy-5-[[(p-tolyl)sulphonyl]amino]naphthalene-2,7-disulphonate Acid Red 172 Brilliant Red 3B 2, 7-Naphthalenedisulfonic acid, 3-[[5-chloro-2-(phenylmethoxy) phenyl]azo]-4-hydroxy-5-[[(4-methylphenyl) sulfonyl] amino], disodium salt Acid Brilliant Red 3B C.I.Acid Red 172 Triacid Fast Red 3BNL. 3-[[2-(Benzyloxy)-5-chlorophenyl]azo]-4-hydroxy-5-[[(4-methylphenyl)sulfonyl]amino]-2,7-naphthalenedisulfonic acid disodium salt