administration studies with 1, 10, and 50 μg of S-23 were conducted, and collected urine samples were analyzed by LC–MS/MS following enzymatic hydrolysis and solid-phase extraction. The analytical method was
fraction) and human liver microsomes (HLMs) were analyzed. In addition, selected metabolites of SLU-PP-915 were synthesized and their structures were analyzed by nuclear magnetic resonance (NMR) spectroscopy
contamination of urine by seminal fluid. To this end, 480 seminal fluids from nonathletes were analyzed to identify concentration ranges and metabolite profiles of therapeutic drugs that are also classified