4,4'-DICHLOROAZOXYBENZENE

4,4'-DIIODO-3,3'-DIMETHOXYBIPHENYL

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

4,4'-METHYLENEBIS(N-(2-CHLORO-4-(DIMETHYLAMINO)BENZYLIDENE)ANILINE)

4,4'-METHYLENEBIS(N-(4-HYDROXY-3-METHOXYBENZYLIDENE)ANILINE)

4,4'-OXYBIS(N-ALLYLBENZENESULFONAMIDE)

4,4'-TETRAMETHYLENEBIS(ACETOPHENONE)

4,4-(Dimethylcyclohex-2-enone)-2-boronic acid, pinacol ester

4,4-DIETHOXY-2-BUTYN-1-OL

4H-benzo[def]carbazole

4,5-DICHLORO-2-(3-TRIFLUOROMETHYLPHENYL)PYRIDAZIN-3(2H)-ONE

4,5-DIHYDRO-1-(4-METHOXYPHENYL)-3-METHYL-1H-1,2,3-TRIAZOLIUM PERCHLORATE

4,5-DIHYDRO-3H-4-AZA-CYCLOHEPTA(2,1-A,3,4-A')DINAPHTHALENE

4,5-DIHYDROXY-2,3,4,5-TETRAPHENYL-CYCLOPENT-2-ENONE

4,5-DIMETHYL-CYCLOHEXA-1,4-DIENE-1,2-DICARBOXYLIC ACID DIMETHYL ESTER