2-Trifluoromethyl-10H-benzo[4,5]imidazo[1,2-a]pyrimidin-4-one

In the molecule of the title compound, C11H6F3N3O, the three fused rings of the benzo[4,5]imidazo[1,2-a]pyrimidine unit are essentially coplanar, the maximum deviation from the mean plane being 0.096 (2) Å. In the crystal, N—H...O hydrogen bonds link the molecules into chains running along the b-axis direction