2-Amino-4-methyl­pyridinium 3-hy­droxy­benzoate

In the title salt, C(6)H(9)N(2) (+)·C(7)H(5)O(3) (−), the anion is essentially planar, with a dihedral angle of 2.72 (17)° between the benzene ring and the carboxyl­ate group. In the crystal, the anions are connected by O—H⋯O hydrogen bonds, forming a 4(1) helical chain along the c axis. The protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxyl­ate O atoms of the anion via a pair of N—H⋯O hydrogen bonds with an R (2) (2)(8) ring motif. The ion pairs are further connected via another N—H⋯O hydrogen bond, resulting in a three-dimensional network.