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Hulme MC, Hayatbakhsh A, Brignall RM, Gilbert N, Costello A, Schofield CJ, Williamson DC, Kemsley EK, Sutcliffe OB, Mewis RE. Detection, discrimination and quantification of amphetamine, cathinone and nor-ephedrine regioisomers using benchtop 1 H and 19 F nuclear magnetic resonance spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2023; 61:73-82. [PMID: 33786881 DOI: 10.1002/mrc.5156] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/10/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Amphetamine and cathinone derivatives are abused recreationally due to the sense of euphoria they provide to the user. Methodologies for the rapid detection of the drug derivative present in a seized sample, or an indication of the drug class, are beneficial to law enforcement and healthcare providers. Identifying the drug class is prudent because derivatisation of these drugs, to produce regioisomers, for example, occurs frequently to circumvent global and local drug laws. Thus, newly encountered derivatives might not be present in a spectral library. Employment of benchtop nuclear magnetic resonance (NMR) could be used to provide rapid analysis of seized samples as well as identifying the class of drug present. Discrimination of individual amphetamine-, methcathinone-, N-ethylcathinone and nor-ephedrine-derived fluorinated and methylated regioisomers is achieved herein using qualitative automated 1 H NMR analysis and compared to gas chromatography-mass spectrometry (GC-MS) data. Two seized drug samples, SS1 and SS2, were identified to contain 4-fluoroamphetamine by 1 H NMR (match score median = 0.9933) and GC-MS (RRt = 5.42-5.43 min). The amount of 4-fluoroamphetamine present was 42.8%-43.4% w/w and 48.7%-49.2% w/w for SS1 and SS2, respectively, from quantitative 19 F NMR analysis, which is in agreement with the amount determined by GC-MS (39.9%-41.4% w/w and 49.0%-49.3% w/w). The total time for the qualitative 1 H NMR and quantitative 19 F NMR analysis is ~10 min. This contrasts to ~40 min for the GC-MS method. The NMR method also benefits from minimal sample preparation. Thus, benchtop NMR affords rapid, and discriminatory, analysis of the drug present in a seized sample.
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Affiliation(s)
- Matthew C Hulme
- Department of Natural Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
- MANchester DRug Analysis and Knowledge Exchange (MANDRAKE), Manchester Metropolitan University, Manchester, UK
| | - Armita Hayatbakhsh
- Department of Natural Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| | | | - Nicolas Gilbert
- Department of Natural Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
- MANchester DRug Analysis and Knowledge Exchange (MANDRAKE), Manchester Metropolitan University, Manchester, UK
| | - Andrew Costello
- MANchester DRug Analysis and Knowledge Exchange (MANDRAKE), Manchester Metropolitan University, Manchester, UK
- Greater Manchester Police, Openshaw Complex, Manchester, UK
| | - Christopher J Schofield
- MANchester DRug Analysis and Knowledge Exchange (MANDRAKE), Manchester Metropolitan University, Manchester, UK
- Greater Manchester Police, Openshaw Complex, Manchester, UK
| | | | - E Kate Kemsley
- Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Oliver B Sutcliffe
- Department of Natural Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
- MANchester DRug Analysis and Knowledge Exchange (MANDRAKE), Manchester Metropolitan University, Manchester, UK
| | - Ryan E Mewis
- Department of Natural Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
- MANchester DRug Analysis and Knowledge Exchange (MANDRAKE), Manchester Metropolitan University, Manchester, UK
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Wang Q, Bian Y, Zhang Y, Sun DM, Wang WL, Zhou Y, Liu ZF, Feng XS, He ZW. Development of Sampling, Pretreatment and Detection Methods for Ephedrine and Related Substances in Complex Samples. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Bozyiğit GD, Ayyıldız MF, Chormey DS, Engin GO, Bakırdere S. Trace level determination of eleven nervous system-active pharmaceutical ingredients by switchable solvent-based liquid-phase microextraction and gas chromatography-mass spectrometry with matrix matching calibration strategy. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:58. [PMID: 34989878 DOI: 10.1007/s10661-021-09708-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
This study utilized switchable solvent liquid-phase microextraction (SS-LPME) to enrich eleven nervous system active pharmaceutical ingredients (APIs) from aqueous samples for their determination at trace levels by gas chromatography mass spectrometry. The analytes selected for the study included APIs utilized in antidepressant, antipsychotic, antiepileptic, and anti-dementia drugs. Parameters of the microextraction method including switchable solvent volume, concentration and volume of the trigger agent (sodium hydroxide), and sample agitation period were optimized univariately to boost extraction efficiency. Under the optimum conditions, the detection limits calculated for the analytes were in the range of 0.20-8.0 ng/mL, and repeatability for six replicate measurements as indicated by percent relative standard deviation values were below 10%. Matrix matching calibration strategy was used to enhance quantification accuracy for the analytes. The percent recovery results calculated for the eleven analytes ranged between 86 and 117%.
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Affiliation(s)
- Gamze Dalgıç Bozyiğit
- Faculty of Civil Engineering, Department of Environmental Engineering, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Merve Fırat Ayyıldız
- Faculty of Art and Science, Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Dotse Selali Chormey
- Faculty of Art and Science, Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Güleda Onkal Engin
- Faculty of Civil Engineering, Department of Environmental Engineering, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Sezgin Bakırdere
- Faculty of Art and Science, Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey.
- Turkish Academy of Sciences (TÜBA), Vedat Dalokay Street, No. 112, 06670, Çankaya, Ankara, Turkey.
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Li M, Wang H, Huan X, Cao N, Guan H, Zhang H, Cheng X, Wang C. Simultaneous LC-MS/MS bioanalysis of alkaloids, terpenoids, and flavonoids in rat plasma through salting-out-assisted liquid-liquid extraction after oral administration of extract from Tetradium ruticarpum and Glycyrrhiza uralensis: a sample preparation strategy to broaden analyte coverage of herbal medicines. Anal Bioanal Chem 2021; 413:5871-5884. [PMID: 34331552 DOI: 10.1007/s00216-021-03568-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/04/2021] [Accepted: 07/20/2021] [Indexed: 11/26/2022]
Abstract
Herbal medicines have historically been practiced in combinatorial way, which achieves therapeutic efficacy by integrative effects of multi-components. Thus, the accurate and precise measurement of multi bioactive components in matrices is inalienable to understanding the metabolism and disposition of herbal medicines. In this study, aiming to provide a strategy that improves analyte coverage, evaluation of six protocols employing sample pretreatment methods- protein precipitation (PPT), liquid-liquid extraction (LLE), sugaring-out-assisted liquid-liquid extraction (SULLE), and salting-out-assisted liquid-liquid extraction (SALLE)- was performed by LC-MS/MS using rat plasma and a mixture of alkaloid (evodiamine, rutaecarpine, dehydroevodiamine), terpenoid (limonin, rutaevin, obacunone), and flavonoid (liquiritin, isoliquiritin, liquiritigenin) standards isolated from Tetradium ruticarpum and Glycyrrhiza uralensis. These protocols were as follows: (1) PPT with methanol, (2) PPT with acetonitrile, (3) LLE with methyl tertiary-butyl ether-dichloromethane, (4) LLE with ethyl acetate-n-butanol, (5) SALLE with ammonium acetate, (6) SULLE with glucose. The results suggested that SALLE produced broader analyte coverage with satisfactory reproducibility, acceptable recovery, and low matrix interference. Then, sample preparation procedure of SALLE, chromatographic conditions, and mass spectrometric parameters were optimized, followed by method validation, showing that good sensitivity (LLOQ ≤ 1 ng mL-1), linearity (r ≥ 0.9933), precision (RSD ≤ 14.45%), accuracy (89.54~110.87%), and stability could be achieved. Next, the developed method was applied successfully to determine the pharmacokinetic behavior of the nine compounds in rat plasma after intragastric administration with an extract from Tetradium ruticarpum and Glycyrrhiza uralensis (Wuzhuyu-Gancao pair). Based on an extensive review and experiments, a sample preparation procedure that matches with LC-MS/MS technique and can get wider analyte coverage was outlined. The developed SALLE method is rapid, reliable, and suitable for bioanalysis of analytes with diverse polarity, which was expected to be a promising strategy for the pharmacokinetic studies of herbal medicines. Graphical abstract.
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Affiliation(s)
- Manlin Li
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Hanxue Wang
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Xiaohan Huan
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Ning Cao
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Huida Guan
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Hongmei Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xuemei Cheng
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Changhong Wang
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China.
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