title: 2-Hy-droxy-N'-[2-(6-meth-oxy-naphthalen-2-yl)propano-yl]benzohydrazide.
abstract: In the title compound, C(21)H(20)N(2)O(4), the naphthalene ring system makes a dihedral angle of 84.5 (3)° with the benzene ring, and the -C(=O)-N(H)-N(H)-C(=O)- torsion angle is 70.7 (7)°, so that the mol-ecule is twisted. An S(6) ring motif is formed via an intra-molecular O-H⋯O hydrogen bond. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯O hydrogen bonds into supra-molecular layers in the ab plane.
authors.forename: Shaaban Kamel
authors.initials: SK
authors.lastname: Mohamed
authors.forename: Peter N
authors.initials: PN
authors.lastname: Horton
authors.forename: Mehmet
authors.initials: M
authors.lastname: Akkurt
authors.forename: Mustafa R
authors.initials: MR
authors.lastname: Albayati
authors.forename: Herman
authors.initials: H
authors.lastname: Potgeiter