The molecule is an organic anion that is the conjugate base of 4,7-dihydroxy-5-methylcoumarin, obtained by deprotonation of the 4-hydroxy group. It is the major microspecies at pH 7.3. It is a conjugate base of a 4,7-dihydroxy-5-methylcoumarin.
7-hydroxy-5-methyl-2-oxochromen-4-olate