6-Bromo-1-ethyl-1H-2,1-benzothiazin-4(3H)-one 2,2-dioxide

In the title compound, C10H10BrNO3S, the S atom is four-coordinated in a distorted tetrahedral configuration with nearly equal S=O bond distances; the S—C and S—N bond lengths are 1.755 (3) and 1.649 (3) Å, respectively. The heterocyclic thiazine ring adopts a twist conformation. Adjacent molecules are attached to each other through intermolecular C—H⋯O hydrogen bonds, forming R 2 2(8) and R 2 2(14) ring motifs. The molecules are stabilized by intra- and intermolecular hydrogen bonds, forming a three-dimensional polymeric network.