Abstract
In the title compound, C19H15N3O, the central pyrazole ring makes dihedral angles of 35.52 (12) and 62.21 (11)degrees with the attached phenyl and methylsubstituted phenyl rings, respectively. The corresponding angle between the phenyl and methylsubstituted phenyl rings is 62.90 (11)degrees. In the crystal, molecules are connected by weak C-H center dot center dot center dot O hydrogen bonds, forming supramolecular chains propagating along the aaxis direction.