2-(4-Bromobenzenesulfonamido)acetic acid

The title compound, C8H8BrNO4S, a halogenated sulfonamide, was prepared by basic hydrolysis of the methyl ester. In the crystal, molecules form centrosymmetric hydrogen-bonded dimers via the carboxyl groups. These dimers are further linked by N-H center dot center dot center dot O interactions involving the carbonyl O and amide H atoms, forming a ribbon-like structure propagating in [ 010]. These ribbons are further linked via C-H center dot center dot center dot O interactions, forming a three-dimensional network.