Abstract
Herein we report the synthesis and characterization of the sulfoconjugate of octopamine and the excretion profile of the sulfoconjugated compound compared to the unchanged drug. The evaded hydrolysis of the compounds enables combination with other substances in screening procedures: for example direct determination of intact sulfoconjugates in combination with diuretics, stimulants, β2-agonists, plasma volume expanders and narcotics without any sample preparation except addition of internal standard. In order to investigate the intact conjugate of octopamine as well as the unchanged therapeutic agent and phase-I metabolites, urine samples were extracted by means of solid phase extraction (SPE) and subsequently analyzed by liquid chromatography tandem mass spectrometry. The employed assay was validated including intra-day and inter-day precision, limit of detection, specificity and recovery. Further, post-administration urine samples were analyzed according to described sample preparation and evaluated concerning the quantity of octopamine and its sulfoconjugate. Einleitung gekürzt
Originalsprache | Englisch |
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Titel | Recent advances in doping analysis (19) : Proceedings of the Manfred-Donike-Workshop, 29th Cologne Workshop on Dope Analysis : 13th to 18th February 2011 |
Herausgeber*innen | Wilhelm Schänzer, Hans Geyer, A. Gotzmann, Ute Mareck |
Seitenumfang | 9 |
Herausgeber (Verlag) | Sportverlag Strauß |
Erscheinungsdatum | 2011 |
Seiten | 34-42 |
Publikationsstatus | Veröffentlicht - 2011 |
Veranstaltung | Cologne Workshop on Dope Analysis - Köln, Deutschland Dauer: 13.02.2011 → 18.02.2011 Konferenznummer: 29 |
Fachgebiete und Schlagwörter
- Biochemie
- Doping
- Dopinganalyse
- Dopingbekämpfung
- Dopingnachweis
- Massenspektrometrie
- Sportmedizin
- Stimulans
- Synthese
- Urinuntersuchung