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Simultaneous Determination of Calycosin-7-O-β-d-Glucoside, Ononin, Calycosin, Formononetin, Astragaloside IV, and Astragaloside II in Rat Plasma After Oral Administration of Radix Astragali Extraction for Their Pharmacokinetic Studies by Ultra-Pressure Liquid Chromatography with Tandem Mass Spectrometry
A sensitive and reliable ultra-pressure liquid chromatography with tandem mass spectrometry (UPLC–MS) was developed and validated for simultaneous quantification of six main bioactive components, i.e., calycos...