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We used multiple silica gel column chromatography and thin-layer chromatography coupled with 1 H nuclear magnetic resonance (NMR) and 13 C NMR to separate and identify the active acaricidal ingredients in Eupatorium adenophorum petroleum ether extract. The acaricidal activity of each compound was tested against Psoroptes cuniculi in vitro. Three compounds had strong acaricidal activity...
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