Synthetic Opioid

World Health Organization 2016:

• Butyrfentanyl is a potent, short-acting mu opioid receptor agonist, and an analogue of fentanyl, differing by only one methyl group.
• It has no approved medical indications, but is being used for recreational purposes, with cases of fatal overdoses reported in Europe and the United States. The actual extent of abuse and mortality associated with butyrfentanyl is not known because it is not tested for in routine toxicological analyses.
• Typically used as a nasal spray, snorted as a white power, or injected intravenously, and doses range from 0.5 to 3 mg.
• The effects appear to be similar to the effects of fentanyl, including euphoria, altered mood states, drowsiness, and respiratory depression.
• Studies suggest that butyrfentanyl is about 30 times less potent than fentanyl
• Butyrfentanyl is being abused for its opioid effects.
• No accepted medical purpose has been identified.

(PDF 17 pages) https://www.who.int/medicines/access/controlled-substances/4.2_Butyrfentanyl_CritReview.pdf

Butyrfentanyl

Duration: Potent short-acting opioid and fentanyl analogue. Often dispensed in a nasal spray. This is an highly potent drug - exercise extreme caution. May cause respiratory depression and death in overdose. NOTE: It's a potent drug, be careful.
Route	Onset	Duration	After Effects
Tripsit Factsheets
Butyrfentanyl Basic Information: http://drugs.tripsit.me/butyrfentanyl
Oral:	15-30 minutes	3-4 hours	1-4 hours
Avoid: Avoid all other CNS depressants.
Aliases: bf b-f

Erowid Experience Vault:
https://erowid.org/experiences/subs/exp_Butyrfentanyl.shtml

Butyrfentanyl:

• A synthetic opioid analgesic
• Potent
• Short-acting
• An analog of fentanyl with around one quarter of its potency
• Side effects are similar to those of fentanyl itself
• Butyrfentanyl binds to the opioid receptor

Butyrfentanyl has no current legitimate clinical applications; however, it is being sold as designer drug