The identification and analytical characterization of 2,2'-difluorofentanyl

Area of Science:

• Forensic Chemistry
• Analytical Chemistry
• Pharmacology

Background:

• New psychoactive substances (NPS) are increasingly prevalent globally.
• Fentanyl analogs pose significant public health risks due to high potency and overdose potential.

Purpose of the Study:

• To provide the first comprehensive analytical characterization of the novel fentanyl derivative, 2,2 -difluorofentanyl.
• To establish identification criteria for this compound in forensic and toxicological analyses.

Main Methods:

• Ultra-high-performance liquid chromatography-quadrupole time-of-flight-mass spectrometry (UHPLC-QTOF-MS)
• Gas chromatography-mass spectrometry (GC-MS)
• Fourier transform infrared (FTIR) spectroscopy
• Nuclear magnetic resonance (NMR) spectroscopy

Main Results:

• Detailed mass spectrometry fragmentation patterns were identified for 2,2 -difluorofentanyl.
• Key diagnostic ions were established from both electrospray ionization (ESI) and electron ionization (EI) mass spectra.
• Spectroscopic data (FTIR, NMR) provided structural confirmation.

Conclusions:

• This study presents the foundational analytical data for 2,2 -difluorofentanyl.
• The characterized data will assist forensic laboratories in identifying this emerging NPS.
• Understanding the analytical profile is crucial for monitoring and controlling the spread of potent synthetic opioids.