3',4'-Dimethoxy-7-hydroxyflavone 33513-36-9 4H-1-Benzopyran-4-one, 2-(3,4-dimethoxyphenyl)-7-hydroxy- 7-Hydroxy-3',4'-dimethoxy flavone 7-Hydroxy-3,4'-dimethoxy flavone Flavone, 7-hydroxy-3',4'-dimethoxy- NSC123383