Opfermann G - Search Results

1

Characterization of chemically modified steroids for doping control purposes by electrospray ionization tandem mass spectrometry.

Thevis M, Bommerich U, Opfermann G, Schänzer W. Thevis M, et al. Among authors: opfermann g. J Mass Spectrom. 2005 Apr;40(4):494-502. doi: 10.1002/jms.820. J Mass Spectrom. 2005. PMID: 15712346

2

Liquid chromatography/electrospray ionization tandem mass spectrometric screening and confirmation methods for beta2-agonists in human or equine urine.

Thevis M, Opfermann G, Schänzer W. Thevis M, et al. Among authors: opfermann g. J Mass Spectrom. 2003 Nov;38(11):1197-206. doi: 10.1002/jms.542. J Mass Spectrom. 2003. PMID: 14648827

3

Electrospray ionization mass spectrometric characterization and quantitation of xanthine derivatives using isotopically labelled analogues: an application for equine doping control analysis.

Thevis M, Opfermann G, Krug O, Schänzer W. Thevis M, et al. Among authors: opfermann g. Rapid Commun Mass Spectrom. 2004;18(14):1553-60. doi: 10.1002/rcm.1518. Rapid Commun Mass Spectrom. 2004. PMID: 15282779

4

N-methyl-N-trimethylsilyltrifluoroacetamide-promoted synthesis and mass spectrometric characterization of deuterated ephedrines.

Thevis M, Opfermann G, Schänzer W. Thevis M, et al. Among authors: opfermann g. Eur J Mass Spectrom (Chichester). 2004;10(5):673-81. doi: 10.1255/ejms.669. Eur J Mass Spectrom (Chichester). 2004. PMID: 15531801

5

Identification of the aromatase inhibitors anastrozole and exemestane in human urine using liquid chromatography/tandem mass spectrometry.

Mareck U, Geyer H, Guddat S, Haenelt N, Koch A, Kohler M, Opfermann G, Thevis M, Schänzer W. Mareck U, et al. Among authors: opfermann g. Rapid Commun Mass Spectrom. 2006;20(12):1954-62. doi: 10.1002/rcm.2545. Rapid Commun Mass Spectrom. 2006. PMID: 16715475

6

6alpha-Methylandrostenedione: gas chromatographic mass spectrometric detection in doping control.

Parr MK, Kazlauskas R, Schlörer N, Opfermann G, Piper T, Schulze G, Schänzer W. Parr MK, et al. Among authors: opfermann g. Rapid Commun Mass Spectrom. 2008;22(3):321-9. doi: 10.1002/rcm.3367. Rapid Commun Mass Spectrom. 2008. PMID: 18181236

7

Factors influencing the steroid profile in doping control analysis.

Mareck U, Geyer H, Opfermann G, Thevis M, Schänzer W. Mareck U, et al. Among authors: opfermann g. J Mass Spectrom. 2008 Jul;43(7):877-91. doi: 10.1002/jms.1457. J Mass Spectrom. 2008. PMID: 18570179 Review.

8

Metabolism of androsta-1,4,6-triene-3,17-dione and detection by gas chromatography/mass spectrometry in doping control.

Parr MK, Fusshöller G, Schlörer N, Opfermann G, Piper T, Rodchenkov G, Schänzer W. Parr MK, et al. Among authors: opfermann g. Rapid Commun Mass Spectrom. 2009 Jan;23(2):207-18. doi: 10.1002/rcm.3861. Rapid Commun Mass Spectrom. 2009. PMID: 19089863

9

Determination of (13)C/(12)C ratios of endogenous urinary steroids excreted as sulpho conjugates.

Piper T, Opfermann G, Thevis M, Schänzer W. Piper T, et al. Among authors: opfermann g. Rapid Commun Mass Spectrom. 2010 Nov 15;24(21):3171-81. doi: 10.1002/rcm.4762. Rapid Commun Mass Spectrom. 2010. PMID: 20941765

10

Mass spectrometry of partially methylated alditol acetates derived from hydroxyethyl starch.

Thevis M, Opfermann G, Schänzer W. Thevis M, et al. Among authors: opfermann g. J Mass Spectrom. 2000 Jan;35(1):77-84. doi: 10.1002/(SICI)1096-9888(200001)35:1<77::AID-JMS916>3.0.CO;2-L. J Mass Spectrom. 2000. PMID: 10633237

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