title: 1-(3-Chloro-2-pyrid-yl)-3-methyl-1H-pyrazole-5-carboxylic acid.
abstract: In the title mol-ecule, C(10)H(8)ClN(3)O(2), the dihedral angle between the pyridine and pyrazole rings is 64.01 (8)°. In the crystal structure, inter-molecular O-H⋯N hydrogen bonds link mol-ecules, forming extended chains along [001]. These chains are, in turn, linked by weak inter-molecular C-H⋯O inter-actions, forming a two-dimensional network perpendicular to the b axis.
authors.affiliation: College of Science, Civil Aviation University of China, Tianjin 300300, People's Republic of China.
authors.forename: Hua
authors.initials: H
authors.lastname: Cai
authors.forename: Ying
authors.initials: Y
authors.lastname: Guo
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Li
authors.forename: Yao
authors.initials: Y
authors.lastname: Wu