Abstract
In the title compound, C12H9NO3S, the dihedral angle between the pyridine and benzene rings is 83.93 (7)°. In the crystal, pairs of O-H⋯O hydrogen bonds link the molecules, forming inversion dimers with graph-set notation R 2 (2)(22). These dimers are in turn linked by weak C-H⋯O hydrogen bonds along [100], forming R 2 (2)(8) rings.