4-Bromo-4'-(methylthio)benzophenone

3-Bromo-3',5'-difluorobenzophenone

3-Bromo-3',5'-dimethylbenzophenone

4-n-Butyl-3'-chlorobenzophenone

3-Chloro-3',4'-difluorobenzophenone

4-n-Butyl-4'-chlorobenzophenone

3,5-Difluoro-4'-(methylthio)benzophenone

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

3,4-Dichloro-4'-methylbenzophenone

3,4-Dichloro-3',5'-dimethylbenzophenone

3,4-Difluoro-4'-ethylbenzophenone