61815-08-5 90268-23-8 Butanamide, 2,2'-((3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(3-oxo-, N,N'-bis(p-anisyl and Ph) derivs. C.I. Pigment Yellow 126 EINECS 290-823-3 Reaction product