4-(Benzene­sulfon­yloxy)-2,2,6,6-tetra­methyl­piperidin-4-yl oxide

The title compound, C15H22NO4S, is a nitroxyl radical, which is stable mainly because the N atom is surrounded by tertiary C atoms, preventing formation of the nitrone. More significantly, inter­molecular C—H⋯O hydrogen bonding contributes to the stability of the structure with weak intra­molecular C—H⋯π(arene) inter­actions. The N—O distance is 1.2816 (18) A.