In the title compound, C(9)H(7)NO(3)S, the benzoisothia-zolone ring system is essentially planar, with a maximum deviation of 0.013 (2) Å. In the crystal, mol-ecules are linked via O-H⋯O hydrogen bonds, forming chains along [010]. In addition, weak inter-molecular C-H⋯O hydrogen bonds are present.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3238948PMC
http://dx.doi.org/10.1107/S1600536811047490DOI Listing

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