| Parent Drug Name | Name of Impurity | Catalogue No. | |
|---|---|---|---|
| Fentanyl | Fentanyl Butyryl Analog | VE009100 | View CAS 1169-70-6 |
| Fentanyl | Fentanyl EP Impurity A | VE0010980 | View CAS 85893-37-4 |
| Fentanyl | Fentanyl EP Impurity B | VE009101 | View CAS 1609-66-1 |
| Fentanyl | Fentanyl EP Impurity D | VE0011321 | View CAS 21409-26-7 |
| Fentanyl | Fentanyl EP Impurity G | VE009104 | View CAS 620-71-3 |
| Fentanyl | Fentanyl EP Impurity H | VE009102 | View |
| Fentanyl | Fentanyl N-Oxide (alpha) | VE009106 | View |
| Fentanyl | Fentanyl N-Oxide (beta) | VE009107 | View |
| Fentanyl | Fentanyl Pyruvyl Analog | VE009099 | View CAS 1243952-13-7 |
| Fentanyl | Fentanyl Related Compound D | VL57002 | View CAS 1155-56-2 |
| Fentanyl | Fentanyl Related Compound G | VL57003 | View CAS 3258-84-2 |
| Fentanyl | Phenacyl Derivative | VE009108 | View |
| Fentanyl | 1-Phenethyl-1H-pyridin-2-one | VE009103 | View CAS 18065-78-6 |
| Fentanyl | 1-Styryl-1H-pyridin-2-one | VE009105 | View CAS 70987-77-8 |
