The molecule is the conjugate base of 3',4',5,7-tetrahydroxy-3-methoxyflavone arising from selective deprotonation of the 7-hydroxy group; major species at pH 7.3. It is a conjugate base of a 3',4',5,7-tetrahydroxy-3-methoxyflavone.
4-(5,7-dihydroxy-3-methoxy-4-oxochromen-2-yl)-2-hydroxyphenolate