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UPLC-PDA analysis of YPG.
Notes: Chromatograms of mixed reference standard compounds (S1) and YPG (S2). Sinapine thiocyanate (3), ferulic acid (5), acteoside (6), auercetin (7), and schisandrin (11) were identified by comparison with standards, while the other peaks represent unknown substances.
Abbreviations: UPLC, ultra-performance liquid chromatography; PDA, photo-diode array; YPG, Yanghe Pingchuan granules.
