2-(4-Acetyl-3,5-dihydroxy-2-methylphenoxy)-4,6-dimethoxy-3-methylbenzoic acid

Abstract

In the title compound, C19H20O8, the benzene rings are nearly perpendicular to each other [dihedral angle 80.2 (2)°]. The carboxy group is twisted out while both the methoxy and acetyl groups are almost coplanar with their attached benzene rings. The hydroxy group is involved in an intramolecular O—H⋯O hydrogen bond with the acetyl O atom and the compound is connected through an intermolecular O—H⋯O contact to form a dimer. The crystal structure is stabilized by intermolecular O—H⋯O hydrogen bonds.