Mass spectrometric behavior of anabolic androgenic steroids using gas chromatography coupled to atmospheric pressure chemical ionization source. Part I: Ionization
作者:M. Raro、T. Portolés、J. V. Sancho、E. Pitarch、F. Hernández、J. Marcos、R. Ventura、C. Gómez、J. Segura、O. J. Pozo
DOI:10.1002/jms.3367
日期:2014.6
The detection of anabolicandrogenicsteroids (AAS) is one of the most important topics in doping control analysis. Gaschromatographycoupled to (tandem) mass spectrometry (GC–MS(/MS)) with electron ionization and liquid chromatographycoupled to tandem mass spectrometry have been traditionally applied for this purpose. However, both approaches still have important limitations, and, therefore, detection
17-Epimerization of 17α-methyl anabolic steroids in humans: metabolism and synthesis of 17α-hydroxy-17β-methyl steroids
作者:Willi Schänzer、Georg Opfermann、Manfred Donike
DOI:10.1016/0039-128x(92)90023-3
日期:1992.11
chromatography as trimethylsilyl derivatives from a capillary SE-54 or OV-1 column 70-170 methylen units before the corresponding 17 alpha-methyl epimer. The electron impact mass spectra of the underivatized and trimethylsilylated epimers are in most cases identical and only for I, II, and V was a differentiation between the 17-epimers possible. 1H nuclearmagneticresonance (NMR) spectra show for the 17 beta-methyl