4,4'-Bis[[1-(2,4-dimethylphenylcarbamoyl)-2-oxopropyl]azo]biphenyl-2,2'-disulfonic acid

1,1-Biphenyl-2,2-disulfonic acid, 4,4-bis1-(2,4-dimethylphenyl)aminocarbonyl-2-oxopropylazo-

4,4'-bis[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl][1,1'-Biphenyl]-2,2'-disulfonic acid

4,4'-Bis[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl]azo]-1,1'-biphenyl-2,2'-disulfonic acid

4,4'-bis[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl]azo][1,1'-biphenyl]-2,2'-disulphonic acid