4,4'-DIISOCYANATO-3,3',5,5'-TETRAETHYLDIPHENYLMETHANE

4,4'-Dimethyl-(3,3'-bithiophene)-2,2'-dicarboxaldehyde

4,4-DIMETHYLOXAZOLIDINE-2-THIONE

4,4'-DIMETHYLOCTAFLUOROBIPHENYL

4,4'-Dinitrostilbene-2,2'-disulfonic acid