title: (Z)-Ethyl 2-(3-nitro-benzyl-idene)-3-oxo-butanoate.
abstract: The title mol-ecule, C(13)H(13)NO(5), adopts a Z conformation at the C= C double bond. The eth-oxy atoms of the ethyl ester group are disordered over two orientations in a 3:2 ratio. Weak inter-molecular C-H⋯O hydrogen bonds help to establish the packing.
authors.affiliation: Department of Chemistry and Biology, Xiangfan University, Xiangfan 441053, People's Republic of China.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Shi