(E)-N′-(4-Chloro­benzyl­idene)-2-meth­oxy­benzohydrazide

In the title hydrazone derivative, C₁₅H₁₃ClN₂O₂, the dihedral angle between the benzene rings is 2.36 (2)°. An intra­molecular N—H...O hydrogen bond is present. In the crystal, N—H...O and C—H...O hydrogen bonds link the mol­ecules into chains running parallel to the b axis.

(E)-2-Meth­oxy-N′-(2,4,6-trihy­droxy­benzyl­idene)benzohydrazide

In the title hydrazone derivative, C₁₅H₁₄N₂O₅, the benzene rings are twisted by 7.55 (8)° with respect to each other. The azomethine double bond adopts an E conformation. The mol­ecular structure is stabilized by intra­molecular O—H...N and N—H...O hydrogen bonds, generating S6 ring motifs. In the crystal, mol­ecules are linked into a three-dimensional network by O—H...O hydrogen bonds.