title: 2,4-Dinitro-benzaldehyde hydrazone.
abstract: The title compound, C(7)H(6)N(4)O(4), plays an important role in the synthesis of biologically active compounds. The planar hydrazone group is oriented at a dihedral angle of 8.27 (3)° with respect to the benzene ring. In the crystal structure, inter-molecular N-H⋯O and N-H⋯N hydrogen bonds link the mol-ecules.
authors.forename: Nan
authors.initials: N
authors.lastname: Zhang
authors.forename: Ruji
authors.initials: R
authors.lastname: Wang
authors.forename: Chunyan
authors.initials: C
authors.lastname: Tan
authors.forename: Yuyang
authors.initials: Y
authors.lastname: Jiang
authors.forename: Yufen
authors.initials: Y
authors.lastname: Zhao