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Author Spotlight: An Efficient Methodology to Confidently Differentiate and Characterize Fentanyl Analogs
Published on: November 8, 2024
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High-throughput screening of fentanyl analogs
Samuel A Miller1, Andrew R Forero1, Lilian Valadares Tose1
1Department of Chemistry and Biochemistry, Florida International University, Miami, FL, 33199, United States.
Talanta
|November 15, 2024
Summary
This study introduces a rapid analytical method using ambient ionization with trapped ion mobility spectrometry (TIMS) and mass spectrometry (MS/MS) to identify fentanyl analogs. The technique enables high-throughput screening and sensitive detection of synthetic opioids for forensic investigations.
Area of Science:
- Analytical Chemistry
- Forensic Science
- Mass Spectrometry
Background:
- Fentanyl analogs and synthetic opioids pose significant public health risks.
- Rapid and accurate identification methods are crucial for forensic investigations and public health surveillance.
- Existing analytical techniques may require extensive sample preparation or lack sufficient throughput.
Purpose of the Study:
- To develop and validate a rapid analytical approach for characterizing fentanyl analogs.
- To couple novel ambient ionization sources with trapped ion mobility spectrometry (TIMS) and tandem mass spectrometry (MS/MS).
- To establish a comprehensive multi-dimensional strategy for synthetic opioid analysis.
Main Methods:
- Utilized two ambient ionization sources: Nanospray electrospray ionization (nESI) and Direct Analysis in Real Time (DART).
- Employed trapped ion mobility spectrometry (TIMS) for separation based on ion mobility.
- Integrated tandem mass spectrometry (MS/MS) for fragmentation analysis and compound identification.
- Reported reference mobility spectra for 234 single standards and characterized 201 compounds via DART-TIMS-MS/MS.
Main Results:
- Achieved baseline separation of most isomers using TIMS with high resolving power (R > 80).
- Established mobility trends for methylated, fluorinated, and ortho-, meta-, para-substituted analogs.
- Demonstrated high-throughput screening (<5 min) and high sensitivity detection (
- Provided alternative mobility calibration methods for enhanced robustness.
Conclusions:
- The developed analytical strategy offers comprehensive characterization of fentanyl analogs with minimal sample preparation.
- This method has significant potential for high-throughput screening and sensitive detection of emerging illicit drugs.
- The approach supports forensic investigations and public health initiatives by enabling rapid identification of synthetic opioids.
