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Fentanyl, also spelled fentanil, is a powerful opioid used as a pain medication and together with other medications for anesthesia. It is also used as a recreational drug, sometimes mixed with heroin, methamphetamine, or cocaine, and its potentially deadly overdose effects can be neutralized by naloxone.
Formula: C22H28N2O
CAS ID: 437-38-7
Molar mass: 336.471 g/mol
Pronunciation: /ˈfɛntənɪl/ or /ˈfɛntənəl/
Metabolism: Liver, primarily by CYP3A4
Duration of actionIV: 30–60 minutes
Onset of action5 minutes