3,4-Difluoro-4'-ethoxybenzophenone

3-Bromo-2'-ethylbenzophenone

3,5-Dichloro-2'-ethylbenzophenone

4-Ethyl-3'-iodobenzophenone

3,5-Dichloro-3',4'-(ethylenedioxy)benzophenone

2-Chloro-3'-fluorobenzophenone

3,3',4-Trifluorobenzophenone

4-Chloro-3'-fluoro-4'-methylbenzophenone

2-Bromo-3'-fluoro-5'-methylbenzophenone

2-Chloro-4'-fluoro-3'-methylbenzophenone

3,5-Dichloro-4'-fluoro-3'-methylbenzophenone