The title compound, C24H18N4O3, has a planar bicyclic imidazolo[5,4-d]pyrimidine core. The planes of the phenyl and methoxyphenoxy substituents form substantial (>30°) dihedral angles with the imidazolopyrimidine plane. Inter-molecular C - H⋯O interactions link the molecules into infinite chains running along the a axis of the crystal structure. © 2006 Internatio...