68610-86-6 71872-67-8 Butanamide, 2,2'-((3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(3-oxo-, N,N'-bis(o-anisyl and 2,4-xylyl) derivs. C.I. Pigment Yellow 127 EINECS 271-878-2