title: 2-[(1-Oxidopyridin-4-yl)sulfan-yl]benzoic acid.
abstract: In the title compound, C12H9NO3S, the dihedral angle between the pyridine and benzene rings is 83.93 (7)°. In the crystal, pairs of O-H⋯O hydrogen bonds link the molecules, forming inversion dimers with graph-set notation R 2 (2)(22). These dimers are in turn linked by weak C-H⋯O hydrogen bonds along [100], forming R 2 (2)(8) rings.
authors.affiliation: Departamento de Química - Facultad de Ciencias, Universidad del Valle, Apartado 25360, Santiago de Cali, Colombia.
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Moreno-Fuquen
authors.affiliation: Departamento de Química - Facultad de Ciencias, Universidad del Valle, Apartado 25360, Santiago de Cali, Colombia.
authors.forename: Leidy
authors.initials: L
authors.lastname: Valencia
authors.affiliation: Instituto de Física de São Carlos, IFSC, Universidade de São Paulo, USP, São Carlos, SP, Brasil.
authors.forename: Javier
authors.initials: J
authors.lastname: Ellena