title: 4-Carb-oxy-pyridinium bromide.
abstract: In the title compound, C(6)H(6)NO(2) (+)·Br(-), the hy-droxy and carbonyl groups make torsion angles of 164.8 (4) and -17.6 (6)°, respectively, with the pyridinium ring. Inter-molecular N-H⋯Br, O-H⋯Br and C-H⋯O hydrogen bonds contribute to the stability of the structure and link the mol-ecules into chains along the b axis.
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 210096, People's Republic of China.
authors.forename: Yingchun
authors.initials: Y
authors.lastname: Wang