2,2′-Di­hydroxy­chalcone

In the title compound, alternatively called 1-(2-hydroxy­phenyl)-3-(2-hydroxy­phenyl)-2-propen-1-one, C₁₅H₁₂O₃, inter­molecular O—H⋯O hydrogen bonds are formed between mol­ecules related by a center of symmetry, and the dimer is planar as a whole. The dimers are stacked along the shortest axis to form a column. In the column, the C=C double bonds related by another center of symmetry approach the shortest C⋯C distance of 3.482 Å. The intermolecular hydrogen bonds and a chevron structure in the crystal may prohibit topochemical reaction.