(5S)-4-(2,2-Dimethyl-prop-yl)-5-isopropyl-1,3,4-oxadiazinan-2-one.

The title compound, C(11)H(22)N(2)O(2), has one chiral center and packs in the monoclinic space group P2(1). The asymmetric unit has five crystallographically independent mol-ecules, four of which engage in inter-molecular N-H⋯O hydrogen bonding.