(E)-4-Hydroxy-N′-(3-hydroxy-4-methoxybenzylidene)benzohydrazide

The molecule of the title benzohydrazide derivative, C15H14N2O4, exists in a trans conformation with respect to the C=N double bond and is twisted, the dihedral angle between the two benzene rings being 24.17 (6)°. The methoxy group is almost co-planar with respect to the attached benzene ring [Cm—O—C—C (m = methyl) = −1.45 (17)°]. In the crystal, the molecules are linked by N—H...O and O—H...O hydrogen bonds into sheets parallel to the bc plane. These sheets are further connected into a three-dimensional network by weak C—H...O and C—H...π interactions