title: 2-Hydr-oxy-5-nitro-benzamide.
abstract: In the title compound, C(7)H(6)N(2)O(4), an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds occur. Weak C-H⋯O links consolidate the packing, leading to R(2) (1)(7) and R(2) (2)(10) loops within (100) polymeric sheets.
authors.forename: Abdul Rauf
authors.initials: AR
authors.lastname: Raza
authors.forename: M Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.forename: Bushra
authors.initials: B
authors.lastname: Nisar
authors.forename: Mohammad
authors.initials: M
authors.lastname: Danish
authors.forename: Mohammad S
authors.initials: MS
authors.lastname: Iqbal