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In the title compound, C 13 H 12 O 3 , the pyran ring adopts a half-chair conformation with a C atom deviating from the least-squares plane of the remaining ring atoms by 0.606 (2) Å. This plane and that of the benzene ring make a dihedral angle of 44.18 (6)°. In the crystal, mol­ecules are linked through O—H⋯O hydrogen bonds into infinite chains along the  b  axis, and these chains are cross-linked by C—H⋯O hydrogen bonded into sheets lying parallel to the  bc  plane. The layers are further connected  via  C—H⋯π inter­actions to form a three-dimensional supra­molecular structure.

5-Hydroxy-6-[(E)-2-phenylethenyl]-5,6-dihydro-2H-pyran-2-one isolated fromGoniothalamus ridleyi