| Abbreviation | Chemical | CAS NO. |
| HQ | Hydroquinone | 123-31-9 |
| RESORCINOL | Resorcinol | 108-46-3 |
| MEHQ | Methoxyhydroquinone | 150-76-5 |
| THQ | Toluhydroquinone | 95-71-6 |
| TBHQ | Tert-Butylhydroquinone | 1948-33-0 |
| P-BQ | p-Benzoquinone | 106-51-4 |
| TBC-20 | 4-Tert-Butylcatechol | 98-29-3 |
| PTZ (TDP-F) | Phenothiazine | 92-84-2 |
| BTA | 1,2,3-Benzotriazole | 95-14-7 |
| Q-1300 | Ammonium N-nitrosophenylhydroxylamine | 135-20-6 |
| Q-1301 | N-nitrosophenylhydroxylamine aluminium salt | 15305-07-4 |