5-Fluoro-1-(pentanoyl)pyrimidine-2,4(1H,3H)-dione

The penta-noyl group and the 5-fluoro-uracil moiety of the title compound, C9H11FN2O3, are essentially coplanar, with the penta-noyl carbonyl group oriented towards the ring CH group and away from the nearer ring carbonyl group. In the crystal structure, two inversion-related mol-ecules form a dimer structure, in which two N - H⋯O hydrogen bonds generate an inter-molecular R 2 ²(8) ring. In addition, there are intra- and inter-molecular C - H⋯O inter-actions.