organic compounds
Molecules of the title compound, C18H16O6, are almost planar. The dihedral angle between the benzopyran system and the benzene ring is 3.36 (5)°. In addition to an intramolecular O—HO hydrogen bond, molecules are connected by weak intermolecular C—HO hydrogen bonds to form a two-dimensional framework.
organic compounds
The γ-pyranone ring of the title molecule, C16H14O5, adopts an envelope conformation. The crystal packing is stabilized by O—HO and C—HO hydrogen bonding.