title: 2-Chloro-5-nitro-pyridin-4-amine.
abstract: The title mol-ecule, C(5)H(4)ClN(3)O(2), possesses mirror symmetry, with all of the atoms lying in the mirror plane. There is an intra-molecular N-H⋯O hydrogen bond involving the adjacent -NO(2) and -NH(2) groups. A short C-H⋯O inter-action is also observed. In the crystal, adjacent mol-ecules are linked via N-H⋯Cl and N-H⋯N hydrogen bonds, forming chains propagating along [100].
authors.affiliation: College of Chemical and Biological Engineering, Yancheng Institute of Technology, Yinbing Road No.9 Yancheng, Yancheng 224051,  People's Republic of China.
authors.forename: Jian-Ling
authors.initials: JL
authors.lastname: He