title: Methyl 3-carboxy-5-nitrobenzoate.
abstract: The structure of the title compound, C(9)H(7)NO(6), is essentially planar [maximum deviation 0.284 (2)Å] except for the methyl H atoms. The crystal structure is stabilized by asymmetric O-H⋯O hydrogen bonds linking the hydrogen carboxyl-ates into pairs around the inversion centres. There is also π-π stacking of the benzene rings [centroid-centroid distance 3.6912 (12) Å].
authors.forename: Pei
authors.initials: P
authors.lastname: Zou
authors.forename: Min-Hao
authors.initials: MH
authors.lastname: Xie
authors.forename: Shi-Neng
authors.initials: SN
authors.lastname: Luo
authors.forename: Ya-Ling
authors.initials: YL
authors.lastname: Liu
authors.forename: Yong-Jia
authors.initials: YJ
authors.lastname: Shen