Details
| Metabolite | Norfentanyl (Major), 4-ANPP (Minor) |
| Chemical Formula | C₂₂H₂₈N₂O |
| Molecular Weight | 336.47 |
| Information | Acetyl fentanyl is a designer drug and fentanyl analog with a potency 40 times greater than heroin and 80 times greater than morphine. Fentanyl presence indicates use or exposure. Not a recognized metabolite of any other drug. |


![(±)-MDA [(±)-3,4-Methylenedioxyamphetamine], 1.0 mg/mL](https://www.quasarinstruments.com/wp-content/uploads/2025/09/6687-M-012.jpg)


