4,4'-BIS-(2-CARBOXYPHENYLAMINO)-3,3'-DIMETHOXYBIPHENYL

4,4'-BIS(2,6-DIPHENYLTHIOPYRYLIUM TETRAFLUOROBORATE)

4,4'-BIS(4-CHLOROPHENYL)-5,5'-DIMETHYLTETRATHIAFULVALENE

4,4'-DIACETOXYBENZIL

4,4'-DICHLORO-(9,9')BIANTHRACENYL

4,4′-Dicyano-3-phenylpropiophenone

4,4''-DIMETHOXY-(1,1',3',1'')TERPHENYL

4,4''-DIMETHYLENEBIS(4'-METHYLBENZOPHENONE)

4,4'-DINITROSTILBENE-2,2'-DISULFONIC ACID, DISODIUM SALT

4,4'-METHYLENEBIS(N-(2,4,6-TRINITROPHENYL)ANILINE)

4,4'-METHYLENEBIS(N-(8-QUINOLYLOXYCARBONYL)ANILINE)

4,4'-OXYDIBUTANOIC ACID

4,4'-SULFONYLDIPHTHALIC ACID

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

4,4-diallyl-1,3(2H,4H)-isoquinolinedione