1486-70-0 2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-4H-1-benzopyran-4-one 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-methoxy- Flavone, 3',4',5,7-tetrahydroxy-3-methoxy- NSC 154016 Quercetin-3-methylether