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In the title mol­ecule, C 21 H 18 N 2 O 3 , the pyridine rings make a dihedral angle of 13.1 (1)°. The phenyl ring is approximately perpendicular to both of them, forming dihedral angles of 87.4 (1)and 81.9 (1)°. In the crystal, pairs of O—H⋯N hydrogen bonds link the mol­ecules into centrosymmetric dimers. Additional C—H⋯O, π–π [centroid–centroid distance = 3.971 (2) Å] and C—H⋯π inter­actions consolidate the dimers into a three-dimensional network.

3-(4-Hydroxyphenyl)-1,5-bis(pyridin-2-yl)pentane-1,5-dione