4-Benzenesulfonamidobenzoic acid

In the molecule of the title sulfonamide compound, C13H11NO4S, the dihedral angle between the planes of the benzene ring and the carboxyl substituent group is 6.7 (4)°. The two aromatic rings are inclined at 45.36 (15)° to one another. In the crystal, adjacent molecules are linked via classical intermolecular N—H...O and O—H...O, and non-classical C—H...O hydrogen bonds, which stabilize the crystal structure