In the title compound, C(16)H(14)N(2)O(2)S, the dihedral angle between the benzothia-zole ring system and benzene ring is 3.11 (2)°. In the crystal structure, inter-molecular O-H⋯N hydrogen bonds link mol-ecules into chains along [100] and these chains are, in turn, linked into a three-dimensional network via weak inter-molecular C-H⋯O hydrogen bonds.