Library
4F-iBF
4-Fluoroisobutyrylfentanyl (also known as 4-FIBF and p-FIBF) is an opioid analgesic that is an analog of butyrfentanyl and structural isomer of 4-Fluorobutyrfentanyl and has been sold online as a designer drug. It is closely related to 4-fluorofentanyl, which has an EC50 value of 4.2 nM for the human μ-opioid receptor. 4-fluoroisobutyrylfentanyl is a highly selective μ-opioid receptor agonist whose analgesic potency is almost ten times of that reported for morphine.
Also known as: 4-Fluoroiso-Butyrfentanyl, 4-Fluoroisobutyrfentanyl
Classification
- Chemical: Anilidopiperidine
- Chemical: Opioid
- Psychoactive: Depressant
- Tag: Synthetic opioid
Effects
- Sedation
- Motor Impairment
- Respiratory Depression
- Constipation
- Pupil Constriction
- Itchiness
- Reduced Anxiety
- Euphoria
- Anxiety Suppression
- Dulled Perception
Routes of Administration
No route information available yet.
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
Links
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