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A preparative high-speed counter-current chromatography (HSCCC) method for isolation and purification of costunolide and dehydrocostuslactone from the Chinese medicinal plant Aucklandia lappa Decne (Muxiang in Chinese) was successfully established by using light petroleum–methanol–water (5:6.5:3.5, v/v/v) as the two-phase solvent system. The upper phase of light petroleum–methanol–water (5:6.5:3.5,...
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