4,4'-BIPHENYLDICARBONITRILE

4,4'-Methylenebis(N,N-dimethylaniline)

4,4'-DIBENZOYLQUINONE DIOXIME

2,2'-Biquinoline-4,4-dicarboxylic acid disodium salt

4,4'-Dichlorobenzhydrol

4,4'-DIETHYNYLDIPHENYLMETHANE

4,4'-DIHEPTYLAZOXYBENZENE

4,4'-DIHYDROXYDIPHENYLMETHANE

4,4'-DIISOCYANATO-3,3',5,5'-TETRAETHYLDIPHENYLMETHANE

4,4'-DIMETHOXY-N-METHYLDIPHENYLAMINE