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The asymmetric unit of the title compound, C(20)H(23)BrN(2)O, contains two independent mol-ecules (A and B), in which the orientations of the 4-isobutyl-phenyl units are different. The dihedral angle between the two benzene rings is 88.45 (8)° in mol-ecule A and 89.87 (8)° in mol-ecule B. Mol-ecules A and B are linked by a C-H⋯N hydrogen bond. In the crystal, mol-ecules are linked into chains running along the a axis by inter-molcular N-H⋯O and C-H⋯O hydrogen bonds. The crystal structure is further stabilized by C-H⋯π inter-actions. The presence of pseudosymmetry in the structure suggests the higher symmetry space group Pbca. However, attempts to refine the structure in this space group resulted in a disorder model with high R (0.097) and wR (0.257) values. The crystal studied was an inversion twin with a 0.595 (4):0.405 (4) domain ratio.

N′-[(E)-4-Bromobenzylidene]-2-(4-isobutylphenyl)propanohydrazide