2,4-Dichloro-N-(3-chloro-phen-yl)benzene-sulfonamide.

In the title compound, C(12)H(8)Cl(3)NO(2)S, the conformation of the N-H bond in the C-SO(2)-NH-C segment is anti to the meta-Cl in the aniline ring. The mol-ecule is twisted at the S atom, the C-SO(2)-NH-C torsion angle being 62.3†(2)°. The dihedral angle between the two benzene rings is 69.3†(1)°. The crystal structure features inversion dimers linked by pairs of N-H⋯O hydrogen bonds.