https://www.selleckchem.com/products/pclx-001-ddd86481.html Interestingly, three aglycones (quercetin, formononetin and maackiain) had significantly more potent anticomplement activities than their prototype glycosides. The results indicated that the enhancement of TFST anticomplement activity was attributed to the active aglycones, especially formononetin and quercetin, produced by human intestinal bacteria. These aglycones are likely to be among the potential active components of S. tonkinensis for its inhibiting inflammation effects. In this study, the core-shell polydopamine-coated magnetic nanomaterials were synthesized with one-step approach and applied as magnetic solid phase extraction adsorbents combined with LCMS/MS for quantification of the diabetes drug glimepiride in beagle dog plasma. The Fe3O4@PDA nanomaterials have strong magnetic response, good dispersibility in aqueous solution, and numerous binding sites for π-π interaction and hydrogen bonding with glimepiride. Based on these merits, glimepiride could be quickly extracted and separated from plasma within 10min. The established method has good linearity (1-2000ng•mL-1), low quantification limit (1ng•mL-1), good precision (RSDs≤12 %), and satisfactory extraction recovery (71.20-85.70 %). Moreover, we successfully applied this method to the bioequivalence study of generic and innovator products of glimepiride in beagle dog plasma. In terms of risk assessment especially for the impurities with different ultraviolet (UV) absorptions in 16-membered macrolides produced by fermentation, quantification without the availability of corresponding reference substances currently poses a challenge. In this study, a reliable method was established for the analysis of impurities in 16-membered macrolides for the first time by high performance liquid chromatography tandem with charged aerosol detector (HPLC-CAD). The chromatographic conditions and CAD parameters were optimized for a good separation and sensitivity