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Tsumura Y, Kiguchi A, Komatsuzaki S, Ieuji K. A novel method to distinguish β-methylphenylethylamines from isomeric α-methylphenylethylamines by liquid chromatography coupled to electrospray ionization mass spectrometry. Forensic Toxicol 2019. [DOI: 10.1007/s11419-019-00511-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Abstract
Purpose
Various phenylethylamines have been detected lately in dietary or sports supplements. N-Methyl-2-phenylpropan-1-amine (phenpromethamine) and 2-phenylpropan-1-amine (β-methylphenylethylamine, BMPEA) are known to produce mass spectra almost identical to those produced by methamphetamine (MA) and amphetamine (AP), respectively, when analyzed by liquid chromatography/mass spectrometry (LC/MS). They may interfere with the analysis of MA and AP. The aims of the present study were to determine whether some substances other than phenpromethamine and BMPEA give mass spectra similar to those given by MA or AP and to develop an analytical method of distinguishing phenpromethamine from MA and BMPEA from AP by derivatization.
Methods
Twenty isomers of MA or AP were selected to be analyzed using LC/MS. Six reagents were examined for derivatization of MA, AP, phenpromethamine, and BMPEA. Three mass spectrometers from two manufacturers were evaluated for their ability to reproduce the data.
Results
All isomers except phenpromethamine and BMPEA were shown to be distinguishable from MA and AP by their mass spectra. For the discrimination of isomeric pairs, derivatization using N-succinimidyl-4-nitrophenylacetate was found to be the best for tandem mass spectrometry and that using 4-nitrobenzoyl chloride was the best for in-source collision-induced dissociation. One or more ions from each pair of isomers gave adequate difference in their relative intensities according to the World Anti-Doping Agency criteria.
Conclusions
The newly developed method was proved to be usable for discriminating among those phenylethylamines.
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Avula B, Bae JY, Chittiboyina AG, Wang YH, Wang M, Khan IA. Liquid chromatography-quadrupole time of flight mass spectrometric method for targeted analysis of 111 nitrogen-based compounds in weight loss and ergogenic supplements. J Pharm Biomed Anal 2019; 174:305-323. [DOI: 10.1016/j.jpba.2019.05.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 12/22/2022]
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Michely JA, Meyer MR, Maurer HH. Paper Spray Ionization Coupled to High Resolution Tandem Mass Spectrometry for Comprehensive Urine Drug Testing in Comparison to Liquid Chromatography-Coupled Techniques after Urine Precipitation or Dried Urine Spot Workup. Anal Chem 2017; 89:11779-11786. [DOI: 10.1021/acs.analchem.7b03398] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Julian A. Michely
- Department of Experimental and Clinical
Toxicology, Institute of Experimental and Clinical Pharmacology and
Toxicology, Saarland University, Homburg, Saar D-66421, Germany
| | - Markus R. Meyer
- Department of Experimental and Clinical
Toxicology, Institute of Experimental and Clinical Pharmacology and
Toxicology, Saarland University, Homburg, Saar D-66421, Germany
| | - Hans H. Maurer
- Department of Experimental and Clinical
Toxicology, Institute of Experimental and Clinical Pharmacology and
Toxicology, Saarland University, Homburg, Saar D-66421, Germany
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Segawa H, T. Iwata Y, Yamamuro T, Kuwayama K, Tsujikawa K, Kanamori T, Inoue H. Differentiation of ring-substituted regioisomers of amphetamine and methamphetamine by supercritical fluid chromatography. Drug Test Anal 2016; 9:389-398. [DOI: 10.1002/dta.2040] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/04/2016] [Accepted: 07/04/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Hiroki Segawa
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
| | - Yuko T. Iwata
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
| | - Tadashi Yamamuro
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
| | - Kenji Kuwayama
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
| | - Kenji Tsujikawa
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
| | - Tatsuyuki Kanamori
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
| | - Hiroyuki Inoue
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa; Chiba 277-0882 Japan
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Cohen PA, Venhuis BJ, Brandt SD. Advancing supplement science: challenges and solutions. Drug Test Anal 2016; 8:e1–3. [DOI: 10.1002/dta.1953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 12/23/2015] [Accepted: 12/25/2015] [Indexed: 12/21/2022]
Affiliation(s)
| | - Bastiaan J. Venhuis
- National Institute for Public Health and the Environment (RIVM) A. van Leeuwenhoeklaan 9 3721 MA Bilthoven the Netherlands
| | - Simon D. Brandt
- School of Pharmacy and Biomolecular SciencesLiverpool John Moores University Byrom Street Liverpool L3 3AF UK
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