2-(3,4-Dihydroxyphenyl)-3,5-dihydroxy-7-methoxy-4H-1-benzopyran-4-one 3,3',4',5-Tetrahydroxy-7-methoxyflavone 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-7-methoxy- (9CI) 5-18-05-00495 (Beilstein Handbook