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Typical HPLC-DAD chromatograms of mixed standards and samples. A: mixed standards; B: SWD; C: THSWD; D: XFSWD; E: SFZYD; F: QLSWD (1. gallic acid, 2. protocatechuic acid,3. vanillic acid, 4. caffeic acid, 5. paeoniflorin, 6. ferulic acid, 7. senkyunolide I).
