(E)-N′-(4-Isopropylbenzylidene)isonicotinohydrazide monohydrate

In the title compound, C16H17N3O·H2O, the isonicotinohydrazide molecule adopts an E conformation about the central C=N double bond. The dihedral angle between the pyridine and the benzene rings is 54.56 (15)°. In the crystal, molecules are connected via N—H...O, O—H...N and O—H...O hydrogen bonds, forming a three-dimensional network.