trisodium 4-[[4-[(3-carboxylato-4-hydroxyphenyl)azo]sulphonatophenyl]-NNO-azoxy]salicylate

trisodium 4-amino-5-hydroxy-3-[[4-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]azo]-6-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate trisodium 4-amino-3-[(2,5-dichloro-4-sulphonatophenyl)azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate trisodium 4-amino-3-[[4'-[(2,4-diaminophenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate trisodium 4-amino-3-[[4-[[4-amino-2-hydroxy-5-[(4-sulphonatophenyl)azo]phenyl]azo]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate