1-Methane-sulfonyl-1H-1,2,3-benzotriazole.

The mol-ecular geometry of the title compound, C(7)H(7)N(3)O(2)S, does not differ much from that of the previously reported 4-toluene-sulfonyl analogue. Unlike the latter compound, however, mol-ecules of the title compound associate primarily via π-π stacking inter-actions of their benzene rings [centroid-centroid distance = 3.5865 (8) Å], forming columnar stacks along the crystallographic 2(1) axes. These stacks are inter-connected via weak C-H⋯O and C-H⋯N hydrogen bonds.