2,7-Dimeth-oxy-1-(2-naphtho-yl)naph-thalene.

In the title mol­ecule, C23H18O3, the dihedral angle between the two naphthalene ring systems is 80.44 (4)°. The mean plane of the bridging carbonyl C—C(=O)—C group makes a torsion angle of −68.55 (17)° with the naphthalene system of the 2,7-dimeth­oxy­naphthalene unit and a torsion angle of −9.01 (19)° with the naphthalene ring system of the naphthoyl group. In the crystal, a weak C—H⋯O hydrogen bond occurs between the carbonyl O atom and an H atom of the naphthalene ring in the 2,7-dimeth­oxy­naphthalene unit of a symmetry-related mol­ecule.