title: Ethyl (E)-3-(6-methyl-4-oxo-4H-chromen-3-yl)prop-2-enoate.
abstract: In the title compound, C(15)H(14)O(4), the chromone ring system is close to being planar [maximum deviation = 0.015 (2) Å]. The double bond of the ethyl prop-2-enoate chain adopts an E conformation and an intra-molecular C-H⋯O hydrogen bond generates an S6 ring. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds generate R(2) (2)(14) loops. Weak π-π inter-actions [centroid-centroid distance = 3.8493 (12) Å] also occur.
authors.affiliation: H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270,  Pakistan.
authors.forename: Sammer
authors.initials: S
authors.lastname: Yousuf
authors.forename: Asma
authors.initials: A
authors.lastname: Mukhtar
authors.forename: Nida
authors.initials: N
authors.lastname: Ambreen
authors.forename: Syed Muhammad
authors.initials: SM
authors.lastname: Saad
authors.forename: Khalid M
authors.initials: KM
authors.lastname: Khan