The molecule is an organic anion resulting from the deprotonation of the 3-hydroxy group of 2,3,4,7,9-pentahydroxy-6-methyl-1H-phenalen-1-one; major microspecies at pH 7.3. It is a conjugate base of a 2,3,4,7,9-pentahydroxy-6-methyl-1H-phenalen-1-one.
2,3,4,9-tetrahydroxy-6-methyl-7-oxophenalen-1-olate