title: N'-Cyclo-pentyl-idene-pyridine-4-carbo-hydrazide.
abstract: The title compound, C(11)H(13)N(3)O, is a derivative of the anti-tuberculosis drug isoniazid [systematic name: pyridine-4-carbohydrazide]. The crystal structure consists of repeating hydrogen-bonded chains parallel to the b axis. Adjacent mol-ecules in the chains are linked by bifurcated N-H⋯(O,N) hydrogen bonds, which form an R(1) (2)(5) ring motif.
authors.forename: Andreas
authors.initials: A
authors.lastname: Lemmerer
authors.forename: Joel
authors.initials: J
authors.lastname: Bernstein
authors.forename: Volker
authors.initials: V
authors.lastname: Kahlenberg