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Detection of DHCMT long-term metabolite glucuronides with LC-MSMS as an alternative approach to conventional GC-MSMS analysis

Permanent link
https://hdl.handle.net/10037/24777
DOI
https://doi.org/10.1016/j.steroids.2022.108979
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Date
2022-02-17
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Göschl, Lorenz; Gmeiner, Günter; Gärtner, Peter; Steinacher, Michael; Forsdahl, Guro
Abstract
Dehydrochloromethyltestosterone (DHCMT) is one of the most detected illicit used anabolic–androgenic steroids in professional sports. Therefore, a fast and accurate analysis of this substance is of great importance for a constructive fight against doping abuse. The conventional method for the analysis of this drug, GC-MSMS, is very sensitive and selective but also very time- and resource-consuming. With the presented work, a new approach for simple detection with LC-HRMSMS without any sample preparation is introduced. The method is based on the direct analysis of two newly described phase-II metabolites of the DHCMT long-term metabolite 4-chloro-18-nor-17β-hydroxymethyl-17α-methyl-5β-androst-13-en-3α-ol (M3). LC-HRMSMS, GC-MSMS, fractionation and derivatization experiments are combined to identify and characterize for the first time two different glucuronide-acid conjugates of this metabolite in positive human urine samples. In addition, a third glucuronide metabolite was identified, however without isomeric structure determination. The detection of these metabolites is particularly interesting for confirmation analyses, as the method is rapid and requires little sample material.
Publisher
Elsevier
Citation
Göschl L, Gmeiner G, Gärtner P, Steinacher, Forsdahl G. Detection of DHCMT long-term metabolite glucuronides with LC-MSMS as an alternative approach to conventional GC-MSMS analysis. Steroids. 2022;180
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