title: 2-methanesulfonamidobenzoic Acid.
abstract: In the title compound, C(8)H(9)NO(4)S, an intra-molecular N-H⋯O hydrogen bond gives rise to a six-membered ring. In the crystal structure, two mol-ecules are connected by O-H⋯O hydrogen bonds, forming a centrosymmetric dimer. These dimers are further connected by C-H⋯O hydrogen bonds.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Shafiq
authors.forename: Muhammad
authors.initials: M
authors.lastname: Zia-Ur-Rehman
authors.forename: Islam Ullah
authors.initials: IU
authors.lastname: Khan
authors.forename: Muhammad Nadeem
authors.initials: MN
authors.lastname: Arshad
authors.forename: Imtiaz
authors.initials: I
authors.lastname: Ahmad