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Systematic (IUPAC) name
CAS Number 79146-56-8
ATC code None
PubChem CID: 6425761
ChemSpider 4931228 YesY
Synonyms β-Methylfentanyl
Chemical data
Formula C23H30N2O
Molecular mass 350.497 g/mol
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β-Methylfentanyl is an opioid analgesic that is an analogue of fentanyl.

β-Methylfentanyl was sold briefly on the black market in the early 1980s, before the introduction of the Federal Analog Act which for the first time attempted to control entire families of drugs based on their structural similarity rather than scheduling each drug individually as they appeared.[1]

β-Methylfentanyl has similar effects to fentanyl. Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression, which can be life-threatening. Fentanyl analogs have killed hundreds of people throughout Europe and the former Soviet republics since the most recent resurgence in use began in Estonia in the early 2000s, and novel derivatives continue to appear.[2]


  1. ^ Henderson GL (1988). "Designer Drugs: Past History and Future Prospects". Journal of Forensic Sciences 33 (2): 569–575. PMID 3286815. 
  2. ^ Jane Mounteney, Isabelle Giraudon, Gleb Denissov, Paul Griffiths (July 2015). "Fentanyls: Are we missing the signs? Highly potent and on the rise in Europe.". The international journal of drug policy. 26 (7): 626–631. doi:10.1016/j.drugpo.2015.04.003. PMID 25976511.