2-Amino-6-(quinoline-2-carboxamido)-pyridinium nitrate.

In the title salt, C(15)H(13)N(4)O(+)·NO(3) (-), an extensive network of N-H⋯N, N-H⋯O and C-H⋯O hydrogen-bond inter-actions are observed throughout the structure. Further stabilization is obtained by π-π stacking inter-actions between inversion-related quinoline systems and inversion-related pyridine rings, with respective centroid-centroid distances of 3.5866 (6) and 3.3980 (6) Å.