(E)-N′-(2,3-Dihy­droxy­benzyl­idene)-4-meth­oxy­benzohydrazide

The mol­ecule of the title benzohydrazide derivative, C(15)H(14)N(2)O(4), is twisted and exists in a trans conformation with respect to the C=N double bond. The dihedral angle between the benzene rings is 56.86 (9)° and the C atom of the meth­oxy group deviates slightly [C—O—C—C = −10.4 (3)°] from its attached benzene ring. An intra­molecular O—H⋯N hydrogen bond generates an S(6) ring. In the crystal, mol­ecules are linked by N—H⋯O and bifurcated N—H⋯(O,O) hydrogen bonds, as well as weak C—H⋯O inter­actions, into two-dimensional networks lying parallel to the bc plane. A weak C—H⋯π inter­action also occurs.