4,23,24-TRINOR-5-BETA-OLEAN-12-EN-3-ONE

4,4'-(1,3-PHENYLENE)BIS(2-AMINO-7,7-DIMETHYL-5-OXO-5,6,7,8-TETRAHYDRO-4H-CHROMENE-3-CARBONITRILE)

4,4'-(butane-1,1-diyl)diphenol

4,4'-(propane-2,2-diyl)bis(2,6-bis((dimethylamino)methyl)phenol)

4,4''-BIS-BROMOMETHYL-(1,1',3',1'')TERPHENYL-2'-CARBONITRILE

4,4'-BIS(4-(CARBETHOXY)PHENYLUREIDO)-3,3'-DIMETHYLBIPHENYL

4,4'-CYCLOHEXYLIDENEBIS-(N,N-DIMETHYLANILINE)

4,4'-DICHLORO-2',5'-DIMETHOXYBUTYRANILIDE

4,4'-DIHYDROXY-3,3'-DINITROBENZOPHENONE

4,4'-DIMETHYL-BICYCLOHEXYL-3,6,3',6'-TETRAENE-2,5,2',5'-TETRAONE

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

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

4,4'-METHYLENEBIS(PHENYLHYDRAZINE) HYDROCHLORIDE HYDRATE

4,4'-SULFONYLBIS(N-(5-INDANYLMETHYLENE)ANILINE)

4,4',4''-METHANETRIYLTRIS(2,6-DI-TERT-BUTYLPHENOL)