title: 2-[(E)-4-Diethyl-amino-2-hy-droxy-benzyl-idene]hydrazinecarboxamide.
abstract: Two mol-ecules make up the asymmetric unit of the title compound, C(12)H(18)N(4)O(2), and both feature an intra-molecular O-H⋯N hydrogen bond, which generates an S(6) ring. The diethyl-amino group of one of the mol-ecules is disordered over two sets of sites in a 0.59 (2):0.41 (2) ratio. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into sheets lying parallel to the ac plane and C-H⋯π inter-actions are also observed.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Chin Wei
authors.initials: CW
authors.lastname: Ooi
authors.forename: Shridhar
authors.initials: S
authors.lastname: Malladi
authors.forename: Arun M
authors.initials: AM
authors.lastname: Isloor
authors.forename: Kammasandra N
authors.initials: KN
authors.lastname: Shivananda