6-Bromo-4-hydrazinylidene-1-methyl-3H-2λ6,1-benzothiazine-2,2-dione

In the title molecule, C9H10BrN3O2S, the thiazine ring has an envelope conformation with the S atom at the flap. The geometry around the S atom is distorted tetrahedral. In the crystal, inversion dimers linked by pairs of N—H...N hydrogen bonds occur, generating R22(6) ring motifs. N—H...O hydrogen bonds and C—H...O interactions connect the dimers, forming a three-dimentional network structure