Description
Ermanin also called 5,7-dihydroxy-3-methoxy-2-(4-methoxyphenyl)-1-benzopyran-4-one, is natural flavonoid isolated from the herb of Tanacetum parthenium. 5,7-dihydroxy-3-methoxy-2-(4-methoxyphenyl)-1-benzopyran-4-one has a high deterrent activity at 40 ppm against Dione juno larvae and exhibits the activity of anti-poliovirus.