organic compounds
The title compound, C17H16O5, crystallizes with two independent molecules in the asymmetric unit. These are oriented approximately orthogonal to one another. The keto group adopts an s-cis conformation; the six-membered ring formed by the O—HO hydrogen bond and the adjacent benzene ring are approximately coplanar. In addition to an intramolecular O—HO hydrogen bond, intermolecular O—HO interactions link adjacent molecules into chains.