Catalysts
| Product name | EC-No. | CAS-No. |
| Boron trifluoride-acetic acid complex | 206-768-5 | 373-61-5 |
| Boron trifluoride-etherate | 203-689-8 | 109-63-7 |
| Copper (II) oxide | 215-269-1 | 1317-38-0 |
| p-Cumenesulfonic acid 65 % solution | 240-210-1 | 16066-35-6 |
| Phenolsulfonic acid 65 % solution | 202-691-6 | 98-67-9 |
| Triflic acid (99,5 %, 25 % solution) | 216-087-5 | 1493-13-6 |
| Triflic acid anhydride | 206-616-8 | 358-23-6 |
