2-(2-Hy­droxy-3-meth­oxy­phen­yl)-6H-perimidin-6-one

The mol­ecule of the title perimidine derivative, C(18)H(12)N(2)O(3), is essentially planar, the dihedral angle between the benzene and perimidine rings being 3.25 (5)°. The hy­droxy and meth­oxy groups lie in the plane of the benzene ring to which they are bound [O—C—C—C = 179.96 (11)° and C—O—C—C = −177.96 (12)°]. An intra­molecular O—H⋯N inter­action generates an S(6) ring motif. In the crystal, mol­ecules are linked by pairs of C—H⋯O inter­actions into dimers, which generate S(16) ring motifs. These dimers are arranged into sheets parallel to the ac plane and further stacked down the b axis by π–π inter­actions, with centroid–centroid distances in the range 3.5066 (8)–3.7241 (7) Å.