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Typical chromatogram of major components in the herbal blend as identified by standard ultra performance liquid chromatography (UPLC) procedures. The herbal blend was analyzed by a reverse-phase UPLC with a C18 column maintained at 40°C. The samples were dissolved in acetonitrile. The main components, 7-hydroxyfrullanolide and α-mangostin were identified by standard UPLC procedures and detected at 210 nm. The results were plotted in arbitrary units (AU) versus elution time.
