The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Trenbolone (17β-hydroxy-estra-4,9,11-trien-3-one) and its derivatives such as 17α-methyltrenbolone represent a class of highly potent anabolic–androgenic steroids, which are prohibited in sports according to the regulation of the World Anti-Doping Agency (WADA). Due to marginal gas chromatographic properties of these compounds but excellent proton affinities resulting from a large and conjugated π-electron...
The detection of target anabolic steroids in doping analysis has generally been performed by gas chromatography combined with mass spectrometry (GC-MS). However, liquid chromatography combined with tandem mass spectrometry (LC-MS 2 ) is gradually becoming more important for this purpose. Also, since non-commercially available anabolic steroids have been found in some doping-control samples,...
The abuse of esters of natural androgenic steroids in cattle fattening and sports is hard to control via routine urine testing. The esters are rapidly hydrolysed in vivo into substances which are also endogenously present in urine. In veterinary control strange findings of 17β-testosterone and 17α-testosterone in urine are often ignored because of the lack of statistically sound reference data of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.