Furanylfentanyl (Fu-F)225 Online order

Description

Furanylfentanyl (Fu-F-225) is a synthetic opioid from the fentanyl group that has been increasingly studied in pharmacological and forensic research in recent years. It is one of a series of structurally modified fentanyl analogs that have been developed to better understand the mechanisms of opioid receptor binding and their potency. Since furanylfentanyl has an exceptionally high affinity for the µ-opioid receptors, it represents a relevant model for preclinical studies dealing with pain effects, tolerance development and addiction mechanisms.

Classification and chemical structure

Chemically, furanylfentanyl is a N-phenyl-N-(1-(2-phenylethyl)piperidin-4-yl)furan-2-carboxamide.
The substance differs from fentanyl by the introduction of a furan ring on the amide side of the molecule.
This structural variation changes the lipophilicity and Bonding dynamics of the molecule, which leads to a slightly altered pharmacokinetic and pharmacodynamic effect.
Furanylfentanyl is usually available as a white to slightly yellowish powder and is highly stable under laboratory conditions when stored in a dry place protected from light.

Structural features

• Furan substitution at the carboxamide position
• High lipid solubility - rapid passage through biological membranes
• Strong affinity to the µ-opioid receptor
• Similar core structure to fentanyl, but with altered metabolization

This structural modification has led to considerable research interest as it provides new insights into the structure-activity relationship within the fentanyl analogs.

Pharmacological properties

Furanylfentanyl is a strongly effective agonist at the µ-opioid receptor, the main target of many analgesically active substances.
Preclinical studies have shown a similarly high, in some cases even above-average potency compared to fentanyl.
This activity is based on stable receptor binding and rapid activation of the G-protein-coupled signaling pathway, which is responsible for pain inhibition and sedation.

Due to this mode of action, furanylfentanyl is used in the Research are mainly used to investigate mechanisms of opioid receptor activation, desensitization and tolerance formation.
It also serves as a comparator substance in the development of new analgesics, which should have a lower risk of respiratory depression or dependence.

Receptor binding and signal transmission

• Primary binding to µ-opioid receptors (MOR)
• Lower activity at δ and κ opioid receptors
• Activation of the G protein-coupled signaling pathway (Gi/o type)
• Inhibition of adenylate cyclase and reduction of neuronal excitation

These mechanisms explain why furanylfentanyl is often used as a comparative model for receptor-ligand analyses in basic pharmacological research.

Analytical identification

Several analytical methods are used for the chemical identification and quantification of furanylfentanyl.
The most important of these include Gas chromatography-mass spectrometry (GC-MS), Liquid chromatography with mass spectrometry coupling (LC-MS/MS) and NMR spectroscopy.
These techniques enable precise determination of substance purity, molecular structure and possible degradation products.
In forensic analysis, furanylfentanyl also serves as a reference standard for the detection of illegal fentanyl analogs.

The development of reliable detection methods is an important part of modern opioid research, as new analogs often have similar fragmentation patterns.
Analytical comparative studies help to improve the detection limits and sensitivity of forensic testing procedures.

Research and experimental applications

Furanylfentanyl is used in pharmacological and biochemical research as a Reference substance used.
Researchers analyze the binding parameters (Kd, Ki) and efficiency (Emax) on different cell lines to determine the pharmacological profile.
The substance is also being studied in animal models to understand the differences in pharmacokinetic distribution, metabolization and receptor desensitization compared to fentanyl.

Central research objectives

• Comparative analyses of opioid receptor affinity
• Investigation of the metabolization pathways by cytochrome P450 enzymes
• Characterization of tolerance and dependency mechanisms
• Analysis of structure-activity relationships in fentanyl analogs

These areas of research are crucial to understanding how structural changes to fentanyl molecules can affect efficacy, duration and safety.

Toxicological significance

Due to its high potency, furanylfentanyl is an important object of study in forensic toxicology.
Even small doses can cause pronounced effects in biological systems, which requires precise dosing and strict safety measures.
In comparative toxicology studies, Fu-F-225 is often used as a model compound to evaluate the potency of different fentanyl analogs.

Analytical findings show that furanylfentanyl is metabolized in biological matrices such as blood or urine by oxidative N-dealkylation and hydroxylation.
The identification of these metabolites plays a decisive role in the development of toxicological screening methods.

Safety and storage instructions

As furanylfentanyl is a highly active substance, it may only be used in qualified laboratory environments and in compliance with international safety standards.
Personal protective equipment such as gloves, safety goggles and lab coats are mandatory when handling.
Work must be carried out under a chemical fume hood to avoid exposure to aerosols or vapors.

Recommended storage conditions

• Temperature: 2-8 °C, preferably in a chemical refrigerator
• Atmosphere: dry and dark, protected from light and moisture
• Container: airtight, chemically resistant containers
• Transport: only in accordance with hazardous substance guidelines and laboratory safety protocols

Under these conditions, the chemical stability of furanylfentanyl is maintained over longer periods of time, which ensures reproducible experimental use.

Legal framework

Furanylfentanyl is classified as a controlled substance in most countries.
In Germany, it falls under the Narcotics Act (BtMG), in the USA under the Federal Analogue Act,
and it is also subject to strict regulations in the EU, Canada, Australia and Switzerland.
Possession, trade or administration outside authorized research facilities is illegal.
Only accredited laboratories may analyze or store the substance under official approval.

These regulations serve to protect against misuse and to ensure that furanylfentanyl is used exclusively for scientific purposes.

Conclusion - Scientific relevance of furanylfentanyl

Furanylfentanyl (Fu-F-225) is an important research object in modern pharmacology and toxicology.
Due to its structural proximity to fentanyl, it offers researchers a valuable basis for comparison when investigating opioid-based mechanisms.
The substance plays a central role in understanding µ-receptor interaction, structure-activity relationships and the development of new detection methods.

At the same time, handling furanylfentanyl requires a high degree of responsibility.
Safety regulations, laboratory guidelines and legal framework conditions must be strictly adhered to.
Only under controlled conditions and with analytically confirmed purity can this compound make a contribution to scientific knowledge - without risk to health or the environment.

In summary, furanylfentanyl remains a highly potent but valuable model for basic research on opioid receptors.
It expands the understanding of pharmacological activity, chemical stability and toxicological mechanisms - always in the context of responsible and legal scientific use.