Butyrfentanyl
Butyrfentanyl is a potent short-acting synthetic opioid and analog of fentanyl, possessing approximately one quarter of its parent compound's potency. It has no established clinical applications and is sold exclusively as a designer drug. One of the earliest references to this compound appears in documentation by The College on Problems of Drug Dependence. As with other fentanyl analogs, butyrfentanyl carries significant risk of respiratory depression and fatal overdose, demanding extreme caution.
Contents
Dosage & Duration
Dosage
Characterized by high potency relative to typical opioids; careful titration strongly recommended.
Duration
Subjective Effects
Butyrfentanyl produces a short-acting opioid experience broadly comparable to that of fentanyl, though at roughly one quarter of its potency. The experience is dominated by analgesia, sedation, and opioid euphoria rather than any meaningful sensory alteration. Its effect profile mirrors that of other fentanyl analogs, including a pronounced risk of life-threatening respiratory depression at higher doses.
Physical
Physical effects center on pain relief and a heavy, sedated body feeling, accompanied by itching and nausea. Respiratory depression scales with dose and can become life-threatening.
Cognitive
The headspace is a typical opioid state centered on euphoric contentment and relaxation, without notable perceptual or hallucinatory components.
Reagent Testing
Loading reagent data
Pharmacology
Pharmacodynamics
Butyrfentanyl acts as an agonist at μ-opioid receptors. In radioligand displacement assays using [3H]fentanyl, it exhibits a Ki of 32 ± 4.1 nM, indicating substantially lower binding affinity than fentanyl itself (Ki 1.06 ± 0.15 nM) and roughly one quarter of its potency as an opioid agonist.
Pharmacokinetics
Butyrfentanyl is rapidly cleared from the body. In studies of urinary excretion following injection, nearly all of the administered dose was excreted or metabolized within the first 3 hours, with only very low concentrations detectable thereafter.
Tolerance
Opioids (fentanyl, morphine, heroin, oxycodone, and other μ-opioid receptor agonists)
Harm Potential
Addiction & Dependence
Psychological
HighClassified as habit-forming. As a potent synthetic opioid and fentanyl analog, it carries significant abuse potential.
Toxicity
Can cause serious respiratory depression that may be life-threatening in overdose.
History & Culture
Butyrfentanyl first appears in scientific literature through documentation by the College on Problems of Drug Dependence, where it was referenced as an N-butyramide fentanyl analog. Pharmacological characterization of the compound—including analgesic efficacy studies, opioid receptor binding…
Legality
International
UN Single Convention on Narcotic Drugs 1961 (Schedule I, added March 2017)
By Country
Automated synthesisInformation aggregated and synthesized using an autonomous workflow built by Josie Kins.
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