Synonyms: Acetoacetanilide,2,2''-[(3,3'-dimethyl-4,4'-biphenylylene)bis(azo)]bis- (7CI); Butanamide,2,2'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenyl-(9CI); Bis(acetyl-N-phenylcarbamoylmethyl)-4,4'-disazo-3,3'-dimethylbiphenyl;C.I. 21130; C.I. Pigment Orange 15; Crayon Orange YT-100; Orange Toner X 2692