AUTHOR=Bai Pu , Dong Yu TITLE=Development and validation of the HPLC–MS/MS method and its application to the pharmacokinetic study for the Mongolian drug Sendeng-4 in rat blood plasma JOURNAL=Frontiers in Pharmacology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1547415 DOI=10.3389/fphar.2025.1547415 ISSN=1663-9812