1-Benzoyl-4-(4-methyl-phen-yl)phthal-azine.

In the title mol-ecule, C(22)H(16)N(2)O, the tolyl and benzoyl rings make dihedral angles 50.2 (5) and 56.4 (5)°, respectively, with the phthalazine ring system while the dihedral angle between the tolyl and benzoyl rings is 0.70 (4)°. The crystal structure is stabilized by inter-molecular C-H⋯O and C-H⋯N hydrogen bonds, as well as weak C-H⋯π inter-actions.