Synonyms: trisodium 3-[(2-chloro-4-nitrophenyl)azo]-5-[[2,4-dihydroxy-5-[[4-[(4-nitro-2-sulphonatophenyl)amino]phenyl]azo]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate;2,7-Naphthalenedisulfonic acid, 3-[(2-chloro-4-nitrophenyl)azo]-5-[[2,4-dihydroxy-5-[[4-[(4-nitro-2-sulfophenyl) amino] phenyl] azo]phenyl]azo]-4-hydroxy-, trisodium salt;3-[(2-Chloro-4-nitrophenyl)azo]-5-[[2,4-dihydroxy-5-[[4-[(4-nitro-2-sodiooxysulfonylphenyl)amino]phenyl]azo]phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt;Einecs 286-796-2;Trisodium 3-((2-chloro-4-nitrophenyl)azo)-5-((2,4-dihydroxy-5-((4-((4-nitro-2-sulphonatophenyl)amino)phenyl)azo)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonate