Ethyl 2-(3,5-dimethyl-1,1-dioxo-2H-1λ(6),2,6-thia-diazin-4-yl)benzoate.

In the title compound, C(14)H(16)N(2)O(4)S, the thia-diazine ring is in a half-boat conformation. The aromatic ring deviates from the plane of this moiety at an angle of 74.6 (2)°. The structure displays inter-molecular N-H⋯O hydrogen bonding [N⋯O = 2.8157 (16) Å], creating ribbons along the [010] axis. There are also weak C-H⋯O inter-actions in the crystal but no π-π stacking.