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The mol­ecule of the title compound, C 27 H 26 N 2 O 4 , lies across a crystallographic inversion centre and adopts an  l -shaped configuration. Within the mol­ecule, the two naphthalene units are approximately perpendicular, making a dihedral angle of 80.24 (5)°. The two intramolecular O—H⋯N hydrogen bonds, generate  S (6) ring motifs. In the crystal structure, every mol­ecule links five other mol­ecules into an infinite cross-linked layered supra­molecular structure  via  inter­molecular C—H⋯O hydrogen bonds, C—H⋯π inter­actions and π–π stacking inter­actions [centroid–centroid distance = 3.956 (4) Å].

2,2′-[1,1′-(Propane-1,3-diyldioxydinitrilo)diethylidyne]di-1-naphthol