2-Chloro-6-(2,3-dichlorobenzenesulfonamido)benzoic acid

In the title compound, C13H8Cl3NO4S, the aromatic rings are oriented at a dihedral angle of 68.94 (1)° and the molecule adopts a V-shape. An intramolecular N—H...O interaction generates a six-membered S(6) ring motif. In the crystal, pairs of O—H...O hydrogen bonds involving the carboxy group link the molecules into inversion dimers with an R22(8) motif. N—H...O and non-classical C—H...O interactions connect the molecules, forming sheets propagating in (100)