(-)-1,4-ANHYDRO-L-THREITOL

1,4-PHENYLENEDIACRYLIC ACID

1,4-BENZENEDICARBONITRILE NN'-DIOXIDE

1,4-BIS(2-HYDROXYHEXAFLUOROISOPROPYL)BENZENE

1,4-BIS(2-METHYLSTYRYL)BENZENE

Nordihydroguaiaretic acid

1,4-BIS(BROMMETHYL)-2,5-DICHLOROBENZENE

1,4-BIS(TERT-BUTOXY)TETRAFLUOROBENZENE

1,4-Bis(trifluoromethyl)-benzene