4,4'-ISOPROPYLIDENEBIS(2,6-DIBROMOPHENOL),95

4,5-METHYLENEDIOXY-2-NITROACETOPHENONE

4,5,5,5-TETRAFLUORO-4-(TRIFLUOROMETHYL)PENT-2-EN-1-OL

4,5,6,7-Tetrachloroindane-1,3-dione

4,5:4',5'-DIBENZO-1,1',3,3,3',3'-HEXAMETHYLINDADICARBOCYANINE PERCHLORATE

4,5:4',5'-DIBENZO-1,1',3,3,3',3'-HEXAMETHYLINDADICARBOCYANINE PERCHLORATE

4,5:4',5'-DIBENZO-1,1'-DIBUTYL-3,3,3',3'-TETRAMETHYLINDADICARBOCYANINE HEXAFLUOROPHOSPHATE

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

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

4,5-Imidazoledicarboxylic acid

4,5-DICHLORO-2-(2,6-DICHLOROBENZYL)-2,3-DIHYDROPYRIDAZIN-3-ONE