In the crystal of the title compound, C(7)H(10)N(2)O(2)S, the mol-ecules are linked by two strong N-H⋯O hydrogen bonds. The mol-ecular structure is stabilized by an intra-molecular N-H⋯O hydrogen bond. The C/S/N plane makes a dihedral angle of 69.7 (2)° with the aromatic ring plane.