Determining the Levels of Four Phenylethanoid Glycosides and Five Triterpene Acids in Liuwei Dihuang Capsule Using Solid Phase Extraction with HPLC-UV

<div>Comparison of HPLC chromatograms obtained using different SPE methods for analysis five triterpene acids in LDC. (1) 3-O-Acetyl 16<i>α</i>-hydroxytrametenolic acid, (2) dehydropachymic acid, (3) pachymic acid, (4) trametenolic acid, and (5) dehydrotrametenolic acid.</div>

Journal of Analytical Methods in Chemistry

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Figure 6: Determining the Levels of Four Phenylethanoid Glycosides and Five Triterpene Acids in Liuwei Dihuang Capsule Using Solid Phase Extraction with HPLC-UV 

Figure 6 | Determining the Levels of Four Phenylethanoid Glycosides and Five Triterpene Acids in Liuwei Dihuang Capsule Using Solid Phase Extraction with HPLC-UV 