4-{5-[(2-Bromo-benz-yl)sulfan-yl]-1H-tetra-zol-1-yl}benzoic acid.

In the title compound, C15H11BrN4O2S, the tetra-zole ring makes dihedral angles of 45.97 (10) and 75.41 (1)°, respectively, with the benzoyl and bromo-benzene rings while the dihedral angle between the benzene rings is 73.77 (1)°. In the crystal, mol-ecules are linked through O-H⋯ N and C-H⋯ O hydrogen bonds, giving infinite chains in both the [110] and [1-10] directions. These chains are further connected by C-Br⋯π and C-O⋯π inter-actions and also by π-π stacking between tetra-zole rings [centroid-centroid distance = 3.312 (1) Å], generating a three-dimensional network.