4,4-DIMETHYL-2-CYCLOHEXEN-1-ONE

4,4'-Dimethylbenzophenone

4,4'-Dinitrodiphenyl disulfide

4,4'-DINITRODIPHENYL ETHER

TRANS-4,4'-DIPHENYLSTILBENE

4,4'-Stilbenedicarboxylic acid

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID

4,5:4',5'-DIBENZO-1,1'-DIBUTYL-3,3,3',3'-TETRAMETHYLINDACARBOCYANINE PERCHLORATE

4,5-BIS(METHYLTHIO)-1,3-DITHIOL-2-ONE

4,5-DIBROMO-2-PHENYL-2,3-DIHYDROPYRIDAZIN-3-ONE

4,5-Dibromothiophene-2-sulphonyl chloride