1-(4-Methoxyphenyl)imidazolidine-2,4-dione

In the title compound, C(10)H(10)N(2)O(3), the dihedral angle between the benzene and imidazolidine rings is 6.0 (4)degrees, consistent with an essentially planar molecule. In the crystal, intermolecular N-H center dot center dot center dot O hydrogen bonding between centro-symmetrically related molecules leads to loosely associated dimeric aggregates. These are connected into a three-dimensional network by C-H center dot center dot center dot O interactions, as well as pi-pi interactions [centroid-centroid distances = 3.705 (3) and 3.622 (3) angstrom] between the imidazolidine and benzene rings.