Pharmacokinetics of ligustilide in Ligusticum chuanxiong essential oil in rats in vivo Protective effects of osthole on focal cereb ralis chemia-reperfusion injury in rats Optimization of extraction process for compund kaliziran gel with orthogonal design Determination of osthole, imperatorin, and isopimpinellin in seeds of Cnidium monnieri by RP-HPLC Matrix formulation of Hanbishu Cataplasma optimized by D-optimal mixture design and research on its in vitro evaluation Preparation of different osthole cyclodextrin inclusion complex and comparison on their bioavailability Synthesis of N-fatty acyl-N-trimethyl chitosan and its solubilization on osthole Separation and purification of coumarins from Heracleum millefolium by high-speed counter-current chromatography Simultaneous determination of 5 active components in fructus cnidii by HPLC In vitro transdermal behavior of effective constituents in Chonghe gel