The title compound, C(13)H(10)N(4)O(2)S(3), is an acyl-ating agent which belongs to the thia-zole class of organic compounds. The dihedral angle between the benzene and thiazole rings, which are fused to each other, is 1.2 (2)° so the overall benzothiazole system is almost planar. Inter-molecular N-H⋯N inter-actions and weak C-H⋯O inter-actions between symmetry-related mol-ecules stabilize the crystal structure, forming three different ring motifs [R(2) (2)(8), R(2) (2)(10) and R(2) (2)(16)] in three dimensions.