| NO. | Name | CAS No. |
| 81 | Pentafluorobenzonitrile | 773-82-0 |
| 82 | 2,2,2-Trifluoroacetophenone | 434-45-7 |
| 83 | 2-chloro-4'-fluoroacetophenone | 456-04-2 |
| 84 | 4,4'-Difluorobenzophenone | 345-92-6 |
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