title: 7-Nitro-5H-1-benzothio-pyrano[2,3-b]pyridin-5-one.
abstract: In the mol-ecule of the title compound, C(12)H(6)N(2)O(3)S, the central heterocyclic ring is oriented at dihedral angles of 3.25 (6) and 2.28 (7)° with respect to the benzene and pyridine rings, respectively. The dihedral angle between the benzene and pyridine rings is 5.53 (7)°. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains.
authors.forename: Muhammad Naeem
authors.initials: MN
authors.lastname: Khan
authors.forename: M Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.forename: Misbahul Ain
authors.initials: MA
authors.lastname: Khan
authors.forename: Islam Ullah
authors.initials: IU
authors.lastname: Khan
authors.forename: Muhammad Nadeem
authors.initials: MN
authors.lastname: Arshad