(E)-2,4-Dimethyl-N′-(2-methyl­benzyl­idene)benzohydrazide

In the title benzoyl­hydrazide derivative, C₁₇H₁₈N₂O, the dihedral angle between the benzene rings is 88.45 (8)° and the azomethine double bond adopts an E conformation. In the crystal, mol­ecules are linked by N—H...O and C—H...O hydrogen bonds, forming a chain along the b axis.

(E)-N′-(3,4-Dihy­droxy­benzyl­idene)-2,4-dimethyl­benzohydrazide monohydrate

In the title compound, C₁₆H₁₆N₂O₃·H₂O, the dihedral angle between the benzene rings is 30.27 (7)°. In the crystal, the components are linked by N—H...O, O—H...O and C—H...O inter­actions into a three-dimensional network.