2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-6-methoxychromen-4-one 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-6-methoxy-chromen-4-one 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-6-methoxy-4-chromenone 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-6-methoxy-chromone 519-96-0 EINECS 208-280-8 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-6-methoxy-4-benzopyrone C10118 Patuletin Quercetagetin 6-methyl ether