The title compound, C(11)H(17)NO(2)S, was obtained by the reaction of (R)-tert-butane-sulfinamide with 3-meth-oxy-phenyl bromide in toluene. In the crystal, mol-ecules inter-act head-to-tail through N-H⋯O and C-H⋯O hydrogen bonds, forming one-dimensional chains parallel to the a axis.