(E)-N'-(4-Hydroxy-benzyl-idene)-4-hydroxy-benzohydrazide methanol solvate.

The title compound, C(14)H(12)N(2)O(3)·CH(4)O, consists of a Schiff base mol-ecule and a methanol mol-ecule of crystallization. The Schiff base mol-ecule is nearly planar, the dihedral angle between the planes of the two benzene rings being 7.2 (2)°. The mol-ecule exists in the trans configuration with respect to the methyl-idene unit. In the crystal structure, the Schiff base and methanol mol-ecules are linked through O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds, forming a three-dimensional network.