3-Carboxy-2-(2-cyclopropylamino-4-methylpyridinium-3-ylamino)pyridinium dinitrate dihydrate

Abstract

The two benzene rings in the cation of the title compound, C15H18N4O22+·2NO3−·2H2O, are almost perpendicular [dihedral angle = 91.6 (2)°]. In the crystal, the components are linked by O—H...O, N—H...O and C—H...O hydrogen bonds.