Tetrasodium 5, 5'-(ethylenebis((3-sulphonato-4, 1-phenylene)-ONN-azoxy))bis(8-(phenylazo)naphthalene-2-sulphonate)

Tetrasodium 5, 5'-(iminobis((1-hydroxy-3-sulphonato-6, 2-naphthylene)azo(5-methoxy-2-methyl-4, 1-phenylene)azo))bis(salicylate)

Tetrasodium 5, 5'-(m-phenylenebis(azo(4, 6-diamino-m-phenylene)azo(6(or 7)-sulphonato-1, 4-naphthylene)azo-p-phenyleneiminocarbonyl-p-phenyleneazo))disalicylate

Tetrasodium 5, 5'-(thiobis((3-sulphonato-p-phenylene)azo))disalicylate

Tetrasodium 5, 5'-(vinylenebis((3-sulphonato-4, 1-phenylene)azo))bis(salicylate)

Tetrasodium 5-((4'-((8-((2, 4-dihydroxy-3-((2-methoxy-5-sulphonatophenyl)azo)phenyl)azo)-1-hydroxy-3, 6-disulphonato-2-naphthyl)azo)-3, 3'-dimethoxy(1, 1'-biphenyl)-4-yl)azo)salicylate

Tetrasodium 5-((4'-((8-amino-7-((5-amino-2-((4-sulphonatophenyl)azo)phenyl)azo)-1-hydroxy-3, 6-disulphonato-2-naphthyl)azo)(1, 1'-biphenyl)-4-yl)azo)salicylate

Tetrasodium 5-((4-(((4-((4-((8-(acetylamino)-1-hydroxy-3, 6-disulphonato-2-naphthyl)azo)-3-ethoxy-7-sulphonato-1-naphthyl)azo)phenyl)amino)carbonyl)phenyl)azo)salicylate

Tetrasodium 5-((4-(2-(4-((4-((3-carboxylato-4-hydroxyphenyl)azo)phenyl)-NNO-azoxy)-2-sulphonatophenyl)vinyl)-3-sulphonatophenyl)-ONN-azoxy)salicylate

Tetrasodium 5-((4-chloro-6-((4-sulphonatophenyl)amino)-1, 3, 5-triazin-2-yl)amino)-4-hydroxy-3-((1-sulphonato-2-naphthyl)azo)naphthalene-2, 7-disulphonate

Tetrasodium 5-((4-chloro-6-((4-sulphonatophenyl)amino)-1, 3, 5-triazin-2-yl)amino)-4-hydroxy-3-((2-sulphonatophenyl)azo)naphthalene-2, 7-disulphonate

Tetrasodium 5-((6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-8-((4-((4-((6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)phenyl)amino)-3-sulphonatophenyl)azo)naphthalene-2-sulphonate

Tetrasodium 5-(2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl)-8-(2-(6-sulfo-4-(2-(3-sulfophenyl)diazenyl)-1-naphthalenyl)diazenyl)-2-naphthalenesulfonate

Tetrasodium 5-(2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl)-8-(2-(7-sulfo-4-(2-(3-sulfophenyl)diazenyl)-1-naphthalenyl)diazenyl)-2-naphthalenesulfonate

Tetrasodium 5-(4-chloro-6-(N-ethyl-anilino)-1, 3, 5-triazin-2-ylamino)-4-hydroxy-3-(1, 5-disulfonatonaphthalen-2-ylazo)-naphthalene-2, 7-disulfonate

Tetrasodium 5-(acetamido)-3-((4-((4-((8-(acetamido)-1-hydroxy-3, 6-disulphonato-2-naphthyl)azo)-5-methoxy-o-tolyl)azo)phenyl)azo)-4-hydroxynaphthalene-2, 7-disulphonate

Tetrasodium 6, 13-dichloro-3, 10-bis((4-((4, 6-dichloro-1, 3, 5-triazin-2-yl)amino)-3-sulfophenyl)amino)-4, 11-triphenodioxazinedisulfonate

Tetrasodium 7, 7'-((6-(phenylamino)-1, 3, 5-triazine-2, 4-diyl)diimino)bis(4-hydroxy-3-((4-methoxy-2-sulphonatophenyl)azo)naphthalene-1-sulphonate)

Tetrasodium 7, 7'-(carbonyldiimino)bis(3-((4-ethoxy-3-sulphonatophenyl)azo)-4-hydroxynaphthalene-2-sulphonate)

Tetrasodium 7, 7'-(carbonyldiimino)bis(4-hydroxy-3-((2-methoxy-4-sulphonatophenyl)azo)naphthalene-2-sulphonate)