4-Hydroxy-N′-[(E)-(2-hydroxyphenyl)methylidene]benzohydrazide

In the title compound, C14H12N2O3, the dihedral angle between the two benzene rings is 21.70 (4)degrees. An intramolecular O-H center dot center dot center dot N hydrogen bond generates an S(6) ring motif. In the crystal structure, the molecules are linked by intermolecular O-H center dot center dot center dot O, N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds into a three-dimensional framework.