N′-[(E)-2-Hy­droxy-5-meth­oxy­benzyl­idene]pyridine-4-carbohydrazide monohydrate

The title compound, C(14)H(13)N(3)O(3)·H(2)O, adopts an E conformation with respect to the azomethine bond and crystallizes in the amide form. An intra­molecular O—H⋯N hydrogen bond occurs. In the crystal, the lattice water molecule plays a major role in the supramolecular architecture by interconnecting adjacent molecules into a three-dimensional netwrok by means of O—H⋯O, O—H⋯N and N—H⋯O hydrogen-bonding inter­actions. The structure also features two non-classical C—H⋯O inter­actions.