4,4'-Trimethylenedipyridine

1,5-DIPHENYL-1,5-PENTANEDIONE

1,3-DIBROMO-2,2-DIETHYLPROPANE

1,3-DICHLORO-2,4,6-TRIFLUOROBENZENE

1,3-DICHLORO-5-(CHLOROMETHYL)BENZENE

1,3-DICHLOROTETRAFLUOROBENZENE

1,3-DIETHYL-8-PHENYLXANTHINE