• Archives of Pharmacal Research
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• v.14 no.2
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• pp.105-108
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• 1991

An insecticidal isoflavon glycoside was isolated from the roots of Maakia ammurensis. Its structure was shown to be formononetin-7-O-$\beta$ glucosy [1-6] glucoside [1] by chemical and spectroscpic methods and to have insecticidal activities against Brown planthopper female adults by spray and topical applications.