1-(2,6-Dihydroxy­phenyl)butanone

The title compound, C₁₀H₁₂O₃, has several intra- and intermolecular hydrogen bonds in the crystal structure. The molecules are linked into infinite chains along [011] via intermolecular O—H...O hydrogen bonds. There are two molecules in the asymmetric unit.

3,4-Di­hydro-8-hydroxy-3,5-di­methyl-7-methoxy­isocoumarin (avicennin B)

The title compound, C₁₂H₁₄O₄, contains two mol­ecules in the asymmetric unit, each with an intramolecular O—H...O hydrogen bond.