N-Acetonylsaccharin

In the title compound [systematic name: 2-(2-oxoprop­yl)-1,2-benzothia­zol-3(2H)-one 1,1-dioxide], C(10)H(9)NO(4)S, the benzo­thia­zole unit is essentially planar [maximum deviation = 0.0490 (9) Å for the S atom] and the oxopropyl group is inclined at an angle 75.61 (8)° with respect to its mean plane. In the crystal, mol­ecules are held together by weak inter­molecular C—H⋯O non-classical hydrogen bonds, resulting in centrosymmetric dimeric units, forming 14-membered ring systems which may be described as R (2) (2)(14) ring motifs. Moreover, mol­ecules lying about inversion centers show π–π inter­actions, with centroid–centroid separations between the benzene rings of 3.676 (2) Å.