title: Diethyl (E)-2,3-bis-[(E)-(2-methyl-2-phenyl-hydrazin-1-yl-idene)meth-yl]but-2-enedioate.
abstract: The complete mol-ecule of the title compound, C24H28N4O4, is generated by crystallographic inversion symmetry. The ethyl side chain is disordered over two sets of sites in a 0.57 (4):0.43 (4) ratio. The dihedral angles between the methyl-idene group and the phenyl ring and ester side chain (major conformation) are 7.61 (8) and 86.95 (8)°, respectively. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds, forming corrugated sheets lying parallel to (010).
authors.affiliation: College of Life Science and Bio-engineering, Beijing University of Technology, Pingleyuan Street No. 100, Chaoyang District, Beijing 100124, People's Republic of China.
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.affiliation: College of Life Science and Bio-engineering, Beijing University of Technology, Pingleyuan Street No. 100, Chaoyang District, Beijing 100124, People's Republic of China.
authors.forename: Libin
authors.initials: L
authors.lastname: Yuan
authors.affiliation: College of Life Science and Bio-engineering, Beijing University of Technology, Pingleyuan Street No. 100, Chaoyang District, Beijing 100124, People's Republic of China.
authors.forename: Xiuqing
authors.initials: X
authors.lastname: Song
authors.affiliation: College of Life Science and Bio-engineering, Beijing University of Technology, Pingleyuan Street No. 100, Chaoyang District, Beijing 100124, People's Republic of China.
authors.forename: Hong
authors.initials: H
authors.lastname: Yan