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Xiao-xu-ming decoction (XXMD) is a traditional Chinese medicine that has been widely used to treat theoplegia and its sequelae. This paper reports the development of three separate assays based on reversed phase high-performance liquid chromatography–mass spectrometry (HPLC–MS) and HPLC–MS/MS for the determination of seven active constituents of XXMD viz oroxylin A-7-O-glucuronide, wogonoside, liquiritigenin,...
A rapid and specific high-performance liquid chromatographic method coupled with electrospray ionization mass spectrometric detection has been developed and validated for identification and quantification of wogonin and oroxylin A in rat plasma. Wogonin, oroxylin A, and diazepam (internal standard) were extracted from plasma samples by liquid–liquid extraction with ethyl acetate. Chromatographic separation...
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