2-(3,4-Dihydroxyphenyl)-5-hydroxy-6,7,8-trimethoxy-2,3-dihydro-4H-1-benzopyran-4-one 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-2,3-dihydro-5-hydroxy-6,7,8-trimethoxy- 5,3',4'-Trihydroxy-6,7,8-trimethoxyflavone 99759-28-1