Dr. Varoon Singh

Overcoming the Challenge of Confident Identification Among Two Related Groups of 17‐Methyl Steroids by GC–MS Tetrahydromethyltestosterone (THMT) and 20-hydroxymethyl-18-nortetrahydromethyltestosterone (20OHnorTHMT) are metabolites of the anabolic androgenic steroids methyltestosterone and metandienone. Both....

Identifying a banned substance or metabolite in an anti-doping sample is key before the amount of the substance can be quantified. Authors optimized chromatographic separation to distinguish 2 structurally similar steroid metabolites.
analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/...

Clenbuterol, but not Inhaled Formoterol, Upregulates the Sarcomere Stabilizer KLHL41 to a Similar Extent as Resistance Training in Human Skeletal Muscle This study shows that clenbuterol, a potent and heavily abused β2-agonist, induces KLHL41 expression—a sarcomeric myofibrillogenesis protein—in human skeletal muscle comparably to resistance training...

Authors studied the amount of a muscle growth protein after oral clenbuterol (banned in sport), inhaled formoterol (allowed w/ limits) & resistance training. 2 wks of oral clenbuterol ⬆️ the protein. 6 wks of formoterol had no effect.

analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/...

Call For Papers: Security and Forensic Applications of Mass Spectrometry This Special Issue welcomes high-quality submissions on security and forensic applications of mass spectrometry. Submit your manuscript by April 30, 2026.

Call for papers: Security & Forensic Applications of Mass Spectrometry. The @jasms.bsky.social Journal of Analytical Chemistry is seeking research on MS methods for forensic science, security, and detection challenges. https://bit.ly/43DNw7X
#TeamMassSpec #MassSpecCommunity #JASMS

Zap thy molecules, trap thy soul, measure in time, and resolve in mass, following thy charge

Separation of mephentermine from other structural analogues of phenethylamine and amphetamine in biological matrices using liquid chromatography–tandem mass spectrometry Stimulants exert euphorigenic and relaxing effects which warrant intervention of regulatory authorities in non-medical usage of these doping agents. T…

Separation of mephentermine from other structural analogues of phenethylamine and amphetamine in biological matrices using liquid chromatography–tandem mass spectrometry #JPBA www.sciencedirect.com/science/arti...

Senior Analytical Service Technician at Cardiff University An opportunity for an academic position as a Senior Analytical Service Technician is available, as advertised on jobs.ac.uk. Apply now and explore other academic job openings.

Senior Analytical Service Technician (incl NMR) Cardiff University - Cardiff School of Chemistry, Applications may be submitted in Welsh www.jobs.ac.uk/job/DPV431/s... #NMRjobs #NMRchat 🧲

#INTERNAL vacancy for a Chemistry Analytical Facility - Technical Specialist to provide specialist technical support across the Chemistry Analytical Facility within the Dept. Chemistry. Apply by 04/01/2026 jobs.york.ac.uk/internal/vac...

Universitat Wien is hiring:
Senior Scientist – Analytical Chemistry and Lipidomics (Full-Time, Postdoctoral Level)