Crystal structure of (E)-1-(1-hy-droxy-naphthalen-2-yl)-3-(2,3,4-tri-meth-oxy-phen-yl)prop-2-en-1-one.

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The title compound, C22H20O5, is composed of a hy­droxy­naphthyl ring and a tri­meth­oxy­phenyl ring [the planes of which are inclined to one another by 21.61 (10)°] bridged by an unsaturated prop-2-en-1-one group. The mean plane of the prop-2-en-1-one group [–C(=O)—C=C–] is inclined to that of the naphthyl system and benzene rings by 3.77 (14) and 18.01 (16)°, respectively. There is an intra­molecular O—H⋯O hydrogen bond present forming an S(6) ring motif. In the crystal, inversion-related mol­ecules are linked by a slipped-parallel π–π inter­action [inter­centroid distance = 3.8942 (13) Å, inter­planar distance = 3.478 (9) Å and slippage = 1.751 Å], and stack along the [101] direction. There are no other significant inter­molecular inter­actions present.