2-Amino-5-chloro-pyridinium 6-oxo-1,6-dihydro-pyridine-2-carboxyl-ate 0.85-hydrate

In the title salt, C(5)H(6)ClN(2) (+)·C(6)H(4)NO(3) (-)·0.85H(2)O, the pyridin-ium ring is planar, with a maximum deviation of 0.010 (2) Å. In the crystal structure, the cations, anions and water mol-ecules are linked via N-H⋯O, O-H⋯O and C-H⋯O hydrogen bonds, forming a three-dimensional network.