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In this paper, an ultra‐high‐performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) method was developed for quantifying the levels of crassicauline A, fuziline, karacoline, and songorine in rat plasma. After processing the rat plasma, the proteins in the plasma were separated by extracting the analytes with acetonitrile–methanol (9:1, v/v). The chromatographic column used was the...
The objective of this study is to explore the pharmacokinetics, tissue distribution, and excretion patterns of GL‐V9 and its glucuronide metabolite, 5‐O‐glucuronide GL‐V9, following the administration of GL‐V9 to Sprague–Dawley (SD) rats. In this research, we developed and validated rapid, sensitive, and selective ultra‐performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) methods...