title: Ethyl 3-oxo-2-[(4-sulfamoylphen-yl)hydra-zono]butyrate.
abstract: In the title compound, C(12)H(15)N(3)O(5)S, an intra-molecular N-H⋯O hydrogen bond between the hydrazine unit and one of the carbonyl groups may influence the mol-ecular conformation. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds, including one which is bifurcated, link the mol-ecules into a two-dimensional network.
authors.forename: K K
authors.initials: KK
authors.lastname: Upadhyay
authors.forename: Priyanka
authors.initials: P
authors.lastname: Rai
authors.forename: Shalini
authors.initials: S
authors.lastname: Upadhyay
authors.forename: M
authors.initials: M
authors.lastname: Nethaji