1-(4-Hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazin-3-yl)ethanone

Abstract

In the title compound, C11H11NO4S, the thiazine ring adopts a distorted half-chair conformation. The enolic H atom is involved in an intramolecular O—H...O hydrogen bond, forming a six-membered ring. Molecules are linked through weak intermolecular C—H...O hydrogen bonds, resulting in chains lying along the b axis.