4,4'-BIS(2,6-DIPHENYL-1-METHYLPYRIDINIUM TETRAFLUOROBORATE)

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

4,4'-BIS(N-(2-HYDROXY-1-NAPHTHYLMETHYLENE)AMINO)DIPHENYL SULFONE

4,4'-Butylidenebis(6-tert-butyl-m-cresol)

4,4'-DICARBOXYAZOXYBENZENE

4,4'-DIHYDRAZINO-2,2'-BIPHENYLDISULFONIC ACID

4,4'-DIMETHYLSTILBENE

4,4'-DITHIOBIS(N-(2-HYDROXY-1-NAPHTHYLMETHYLENE)ANILINE)

4,4'-METHYLENEBIS(1-CYCLOHEXYL-1-ISOPROPYL-3-PHENYLUREA)

4-NITROFLUORESCEIN

4-NITROPHENYL P-TOLYL DISULFIDE

4-NITROTOLUENE-ALPHA,ALPHA-DIOL DIACETATE

4,4'-METHYLENEBIS(S-BUTYL N-PHENYLTHIOLCARBAMATE)

4,4'-PENTAMETHYLENEBIS(METHYL PHENYL ACETATE)

4,4',6,6'-TETRABROMO-2,2'-BIPHENOL