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).