Determination of plasma concentration of quercetin, kaempferid and isorhamnetin in Hippophae rhamnoides extract by HPLC-MS/MS and pharmacokinetics in rats Simultaneous determination of eleven ingredients in Xinnaokang Tablets by HPLC Chemical constituents and bioactivities of Zanthoxylum avicennae Quantitative analysis and HPLC fingerprint of quercetin and kaempferide from different Flos Farfaraes Study on UPLC fingerprint of Alpiniae Oxyphyllae Fructus Simultaneous determination of quercetin, kaempferide, and isorhamnetin in Anoectochilus roxburghii from Fujian by RP-HPLC Effects of different processing methods on content of flavonoids from Sophorae Fructus Study on quantitative determination method of flavonoids and terpene lactone components in Dipyridamole Injection