5-Chloro-6-hy­droxy-7,8-dimethyl­chroman-2-one

In the title mol­ecule, C(11)H(11)ClO(3), the fused pyran ring adopts a half-chair conformation. In the crystal, inter­molecular O—H⋯O hydrogen bonds link mol­ecules into chains along [100]. These chains are inter­connected by weak inter­molecular C—H⋯O contacts which generate R (2) (2)(8) ring motifs, forming sheets parallel to (001). Tetra­gonal symmetry generates an equivalent motif along b. Furthermore, the sheets are linked along the c axis by offset π–π stacking inter­actions involving the benzene rings of adjacent mol­ecules [with centroid–centroid distances of 3.839 (2) Å], together with an additional weak C—H⋯O hydrogen bond, resulting in an overall three-dimensional network.