Crystal structure of 3-hy­droxy-2-(4-hy­droxy-3-meth­oxy­phenyl­methyl)-5,5-di­methyl­cyclo­hex-2-enone

In the title compound, C(16)H(20)O(4), a new starting compound for the synthesis of various heterocycles, the partially saturated six-membered ring adopts a sofa conformation. An intra­molecular O—H⋯O hydrogen bond is observed in the guaiacol residue. In the crystal, mol­ecules are assembled into a sheet structure parallel to the ab plane via O—H⋯O hydrogen bonds. The hydrogen-bond pattern is described by an R (4) (4)(28) graph-set motif. The sheets are further linked by C—H⋯O hydrogen bonds into a three-dimensional network.