2-(3,4-Dihydroxyphenyl)-7-hydroxy-4H-1-benzopyran-4-one 2150-11-0 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-7-hydroxy- 5-18-04-00590 (Beilstein Handbook Reference) 7,3',4'-Trihydroxyflavone BRN 0253031