N′-[(1E)-4-Hydroxy-3-Methoxybenzylidene]isonicotinohydrazide Monohydrate

In the title hydrate, C\sb 14H\sb 13N\sb 3O\sb 3⋅H\sb 2O, the dihedral angle between the pyridine and benzene rings is 2.52(9)\circ. Intra\-molecular O—-H⋅sO hydrogen bonds occur. In the crystal, O—-H⋅sO, O—-H⋅sN, N—-H⋅sO and C—-H⋅sO hydrogen bonds link the components into a three-dimensional network. π—π inter\-actions are also observed