2-Amino-5-chloro­pyridinium hydrogen succinate

In the title salt, C(5)H(6)ClN(2) (+)·C(4)H(5)O(4) (−), the pyridine N atom is protonated. The pyridinium and amino groups associate via a pair of N—H⋯O hydrogen bonds to the carboxyl­ate O atoms of the singly deprotonated succinate anion. The hydrogen succinate anions self-assemble via O—H⋯O hydrogen bonds into chains along the b axis. The crystal structure is further stabilized by additional N—H⋯O hydrogen bonds involving the second amino H atoms, as well as C—H⋯O contacts, forming a three-dimensional network.