(Z)-1-(4-Methyl-phen-yl)-2-(phenyl-sulfon-yl)ethanone oxime.

The mol-ecule of the title compound, C(15)H(15)NO(3)S, has a twisted U-shaped conformation: the twist occurs at the central C-S(=O)(2)-C-C-C unit and the benzene ring makes a dihedral angle of 28.74 (7)° with the phenyl ring. The S-C-C=N torsion angle is -88.95 (13)°. In the crystal, inversion dimers linked by pairs of O-H⋯N hydrogen bonds generate R(2) (2)(6) loops, and C-H⋯O hydrogen bonds connect the dimers into a three-dimensional network.