title: Methyl 2-(4-acetamido-benzene-sulfon-amido)-benzoate.
abstract: The mol-ecule of the title compound, C(16)H(16)N(2)O(5)S, has the shape of the letter V but with a small twist; the dihedral angle formed between the benzene rings is 79.66 (9)°. The presence of an intra-molecular N-H⋯O hydrogen bond, leading to an S(6) ring, correlates with the near coplanarity of the carboxyl-ate ester group with the benzene ring to which it is connected. The acetamide residue is slightly twisted out of the plane of its benzene ring [C-C-N-C = 13.1 (3)°]. In the crystal, supra-molecular chains along the a axis are mediated by N-H⋯O hydrogen bonds. These are connected into layers via C-H⋯O inter-actions.
authors.forename: Islam Ullah
authors.initials: IU
authors.lastname: Khan
authors.forename: Shahzad
authors.initials: S
authors.lastname: Sharif
authors.forename: Salamat
authors.initials: S
authors.lastname: Ali
authors.forename: Waqar
authors.initials: W
authors.lastname: Ahmad
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink