The asymmetric unit of the title compound, C9H7N3O2, is composed of two independent molecules. The crystal structure is stabilized by C—H...O and C—H...N hydrogen bonds, forming a three-dimensional network. The crystal structure also features pyrazine–pyrazine π–π interactions [centroid–centroid distance = 3.6994 (5) Å] and also pyridine–pyrazine π–π interactions [centroid–centroid distance = 3.6374 (5) Å].