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De novo synthesis of trideuteromethyl esters of amino acids for use in GC-MS and GC-tandem MS exemplified for ADMA in human plasma and urine: standardization, validation, comparison and proof of evidence for their aptitude as internal standards.
Tsikas D. Tsikas D. J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Aug 1;877(23):2308-20. doi: 10.1016/j.jchromb.2009.01.005. Epub 2009 Jan 14. J Chromatogr B Analyt Technol Biomed Life Sci. 2009. PMID: 19168404
GC-MS determination of creatinine in human biological fluids as pentafluorobenzyl derivative in clinical studies and biomonitoring: Inter-laboratory comparison in urine with Jaffé, HPLC and enzymatic assays.
Tsikas D, Wolf A, Mitschke A, Gutzki FM, Will W, Bader M. Tsikas D, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2010 Oct 1;878(27):2582-92. doi: 10.1016/j.jchromb.2010.04.025. Epub 2010 Apr 24. J Chromatogr B Analyt Technol Biomed Life Sci. 2010. PMID: 20462809
Unique pentafluorobenzylation and collision-induced dissociation for specific and accurate GC-MS/MS quantification of the catecholamine metabolite 3,4-dihydroxyphenylglycol (DHPG) in human urine.
Zoerner AA, Heusser K, Gutzki FM, Mitschke A, Tank J, Stichtenoth DO, Jordan J, Tsikas D. Zoerner AA, et al. Among authors: tsikas d. J Chromatogr B Analyt Technol Biomed Life Sci. 2011 May 15;879(17-18):1444-56. doi: 10.1016/j.jchromb.2010.06.022. Epub 2010 Jun 26. J Chromatogr B Analyt Technol Biomed Life Sci. 2011. PMID: 20638915
453 results