title: 7-Diethyl-amino-2-oxo-2H-chromene-3-carbohydrazide.
abstract: The asymmetric unit of the title compound, C(14)H(17)N(3)O(3), contains two independent mol-ecules with different conformations of the ethyl groups. In the crystal, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into ribbons extending along the a axis.
authors.affiliation: Key Laboratory of Natural Resources of Changbai Mountain, & Functional Molecules (Yanbian University), Ministry of Eduction, Yanji 133002, People's Republic of China.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Zhang
authors.forename: Bing-Zhu
authors.initials: BZ
authors.lastname: Yin