Ethyl 4-(phenyl-sulfon-yl)piperazine-1-carboxyl-ate

In the title compound, C(13)H(18)N(2)O(4)S, the piperazine ring adopts a chair conformation. The dihedral angle between the least-squares planes through the piperazine and benzene rings is 73.23 (10)°. In the crystal, there are no classical hydrogen bonds but stabilization is provided by weak C-H⋯π inter-actions.