Synonyms: 2,2-[(3,3-Dichloro[1,1-biphenyl]-4,4-diyl)bis(azo)]bis[N-(2,4-dimethoxyphenyl)-3-oxobutanamide]; 2,2'-((3,3'-Dichloro(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(N-(2,4-dimethoxyphenyl)-3-oxobutanamide);Butanamide, 2,2'-((3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(N-(2,4-dimethoxyphenyl)-3-oxo-;Butanamide, 2,2'-((3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(2,1-diazenediyl))bis(N-(2,4-dimethoxyphenyl)-3-oxo-