N′-[(E)-(3-Phenyl-1H-pyrazol-4-yl)methylidene]naphtho[2,1-b]furan-2-carbohydrazide monohydrate

In the title hydrate, C23H16N4O2 center dot H2O, the pyrazole ring is approximately planar, with a maximum deviation of 0.023 (1) angstrom, and makes dihedral angles of 28.63 (6) and 46.44 (7)degrees with the naphtho[2,1-b] furan ring system and the benzene ring, respectively, In the crystal, O-H center dot center dot center dot N, O-H center dot center dot center dot O, N-H center dot center dot center dot O, N-H center dot center dot center dot N, C-H center dot center dot center dot O and C-H center dot center dot center dot N hydrogen bonds link the molecules, forming sheets lying parallel to the ab plane. The crystal structure also features C-H center dot center dot center dot pi interactions involving the centroids of the pyrazole and benzene rings.