2,4-Dimeth­oxy-6-[(E)-2-(4-meth­oxy­phenyl)ethen­yl]benzaldehyde

There are two conformationally similar mol­ecules in the asymmetric unit of he title compound, C₁₈H₁₈O₄, in which the dihedral angles between the benzene rings are 23.54 (12) and 31.11 (12)°. In the crystal, C—H...π inter­actions (minimum H...ring centroid distance = 2.66 Å) link the mol­ecules into a layered structure extending down a.