The title compound, C22H17ClN2O2, was synthesized by the condensation reaction between 1,2-phenylenediamine and 2-chloro-3′,4′-dimethoxybenzil in boiling acetic acid. The chlorophenyl and dimethoxyphenyl rings make dihedral angles of 78.45 (5) and 35.60 (4)°, respectively, with the quinoxaline unit
