Fun, H.-K.Goh, J.H.Padaki, M.Malladi, S.Isloor, A.M.2026-02-052009Acta Crystallographica Section E: Structure Reports Online, 2009, 65, 7, pp. o1591-o159216005368https://doi.org/10.1107/S1600536809022284https://idr.nitk.ac.in/handle/123456789/27615In the title compound, C<inf>9</inf>H<inf>10</inf>BrN<inf>3</inf>O, the hydrazone portion and aliphatic chain are essentially coplanar [maximum deviation 0.057 (15) Å] and the mean plane makes a dihedral angle of 70.9 (6)° with the benzene ring. The main feature of the crystal structure is the inter-molecular N - H?O hydrogen bond, which links mol-ecules into zigzag chains along the a axis. These chains are further stacked along the b axis. The crystal structure features non-classical inter-molecular C - H?O inter-actions. The crystal studied was a nonmerohedral twin, with a twin ratio of 0.505 (1):0.495 (1).