In the crystal structure of the title compound, C(8)H(5)N(3)O(3), inter-molecular N-H⋯O hydrogen bonds link mol-ecules into centrosymmetric dimers. These dimers are, in turn, linked though weak inter-molecular C-H⋯O and C-H⋯N hydrogen bonds and π-π stacking inter-actions, with centroid-centroid distances of 3.678 (3) Å, into a three-dimensional network.