[3-(4-Chloro­phen­yl)-5-hydr­oxy-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl](3-pyrid­yl)methanone

In the title compound, C(21)H(16)ClN(3)O(2), the dihedral angles formed by the pyrazole ring with the pyridyl, phenyl­ene and phenyl rings are 6.80 (5), 9.23 (5) and 74.96 (5)°, respectively. The phenyl and phenyl­ene rings are inclined at 80.14 (2)°. Intra­molecular O—H⋯O and C—H⋯N hydrogen bonds generate S(6) ring motifs. The crystal packing is strengthened by short inter­molecular O—H⋯N, C—H⋯O hydrogen bonds and π–π stacking inter­actions with centroid–centroid distances of 3.6247 (5)–3.7205 (5) Å, together with inter­molecular short O⋯N contacts [2.7682 (11) Å]. Mol­ecules are linked into infinite chains along [100].