title: LC-MS-MS Analysis of N,α-Diethylphenethylamine (N,α-ETH) and Its Positional Isomer N,β-Diethylphenethylamine (N,β-ETH) in Dietary Supplements.
abstract: In a previous publication, we reported on the analysis of several dietary supplement/exercise formulas and the quantitation of N,α-diethylphenethylamine (N,α-ETH, 3: ). In this article we report on the reanalysis of these products using LC-MS-MS and GC-MS methods capable of clearly separating the N,α-isomer ( 3: ) from its N,β-isomer (N,β-ETH, 4: ). The reanalysis, by both methods, showed that all samples previously reported as containing N,α-ETH ( 3: ) do contain only that isomer with no detectable concentrations of the N,β-ETH ( 4: ).
authors: ElSohly Laboratories, Inc. (ELI), 5 Industrial Park Drive, Oxford, MS 38655, USA Phytochemical Services, Incorporated (PSI), 5 Industrial Park Drive, Oxford, MS 38655, USA National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, MS 38677, USA elsohly@elsohly.com.
authors: Mahmoud A
authors: MA
authors: ElSohly
authors: ElSohly Laboratories, Inc. (ELI), 5 Industrial Park Drive, Oxford, MS 38655, USA.
authors: Timothy P
authors: TP
authors: Murphy
authors: ElSohly Laboratories, Inc. (ELI), 5 Industrial Park Drive, Oxford, MS 38655, USA Phytochemical Services, Incorporated (PSI), 5 Industrial Park Drive, Oxford, MS 38655, USA.
authors: Kareem M
authors: KM
authors: ElSohly
authors: ElSohly Laboratories, Inc. (ELI), 5 Industrial Park Drive, Oxford, MS 38655, USA Phytochemical Services, Incorporated (PSI), 5 Industrial Park Drive, Oxford, MS 38655, USA National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA.
authors: Waseem
authors: W
authors: Gul
mesh_terms: D002138:Calibration; D002853:Chromatography, Liquid / Q000592:standards; D019587:Dietary Supplements / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D007536:Isomerism; D008694:Methamphetamine / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D015394:Molecular Structure; D012015:Reference Standards; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry / Q000592:standards
chemical_list: C587790:N,alpha-diethylphenylethylamine; D008694:Methamphetamine