2-(1H-1,2,3-Benzotriazol-1-yl)-N'-(2-chloro-benzyl-idene)acetohydrazide.

In the title compound, C15H12ClN5O, the mean planes of the benzotriazole and chloro­phenyl fragments form a dihedral angle of 70.8 (1)°. In the crystal, mol­ecules are linked into infinite chains along the a axis by N—H⋯O hydrogen bonds. Weak inter­molecular C—H⋯N hydrogen bonds further link these chains into layers parallel to the ab plane. The crystal studied was a racemic twin.