2,3-Diamino­pyridinium 3-amino­benzoate

In the title salt, C(5)H(8)N(3) (+)·C(7)H(6)NO(2) (−), the pyridine N atom of the 2,3-diamino­pyridine mol­ecule is protonated. The proton­ated N atom and one of the two N atoms of the 2-amino groups are hydrogen bonded to the 3-amino­benzoate anion through a pair of N—H⋯O hydrogen bonds, forming an R (2) (2)(8) ring motif. The carboxyl­ate mean plane of the 3-amino­benzoate anion is twisted by 8.81 (7)° from the attached ring. The crystal structure is further stabilized by π–π inter­actions [centroid–centroid distance 3.6827 (7) Å].