title: Methyl 4-hy-droxy-2-meth-oxy-carbonyl-methyl-1,1-dioxo-1,2-dihydro-1λ,2-benzothia-zine-3-carboxyl-ate.
abstract: There are two independent mol-ecules in the asymmetric unit of the title compound, C(13)H(13)NO(7)S, which have almost identical geometries. The thia-zine ring adopts a sofa conformation in both mol-ecules and the mol-ecular conformations are stabilized by intramolecular O-H⋯O hydrogen bonds. Inter-molecular C-H⋯O hydrogen bonds stabilize the crystal packing.
authors: Muhammad Nadeem
authors: MN
authors: Arshad
authors: Islam Ullah
authors: IU
authors: Khan
authors: Muhammad
authors: M
authors: Zia-Ur-Rehman
authors: Sheikh Asrar
authors: SA
authors: Ahmad
authors: H M
authors: HM
authors: Rafique