3,5-Difluoro-3',4'-dimethylbenzophenone

3,3',5,5'-Tetrafluorobenzophenone

3,4-Dichloro-4'-(methylthio)benzophenone

3,4-Dichloro-4'-iso-propylbenzophenone

4-n-Butyl-3',4'-dichlorobenzophenone

3,4-Difluoro-4'-(methylthio)benzophenone

3,4-Difluoro-4'-(ethylthio)benzophenone

3,4-Difluoro-3',4'-dimethoxybenzophenone

3-Bromo-4'-chlorobenzophenone

3-Chloro-3',5'-difluorobenzophenone

4-Chloro-3',4',5'-trifluorobenzophenone