Abstract
In the molecule of the title sulfonamide compound, C(13)H(11)NO(4)S, the dihedral angle between the planes of the benzene ring and the carboxyl substituent group is 6.7 (4)degrees. The two aromatic rings are inclined at 45.36 (15)degrees to one another. In the crystal, adjacent molecules are linked via classical intermolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O, and non-classical C-H center dot center dot center dot O hydrogen bonds, which stabilize the crystal structure.