Synonyms: p-Acetoacetophenetidide, 2,2''-((2,2'-dichloro-4,4'-biphenylylene)bis(azo))bis-;2,2''-[(2,2'-dichloro-4,4'-biphenylylene)bis(azo)]bis-p-Acetoacetophenetidide 2,2''-[(2,2'-dichloro-4,4'-biphenylylene)bis(azo)]bis-p-acetoacetophenetidid;2,2'-Dichloro-4,4'-bis[[1-[[(4-ethoxyphenyl)amino]carbonyl]-2-oxopropyl]azo][1,1'-biphenyl];Butanamide, 2,2'-((2,2'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(2,1-diazenediyl))bis(N-(4-ethoxyphenyl)-3-oxo-;Butanamide, 2,2'-((2,2'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(N-(4-ethoxyphenyl)-3-oxo-