title: (1E,4Z,6E)-5-Hy-droxy-1,7-bis-(2-meth-oxy-phen-yl)-1,4,6-hepta-trien-3-one.
abstract: In the title compound, C(21)H(20)O(4), the central hepta-trienone unit is approximately planar, with a maximum atomic deviation of 0.1121 (11) Å; the two benzene rings are twisted with respect to the hepta-trienone mean plane by 2.73 (5) and 29.31 (4)°. The mol-ecule exists in the enol form and the hy-droxy group forms an intra-molecular hydrogen bond with the neighboring carbonyl group. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.
authors.affiliation: Faculty of Pharmacy, The University of Sydney, NSW 2006,  Australia.
authors.forename: Yiliang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Paul W
authors.initials: PW
authors.lastname: Groundwater
authors.forename: David E
authors.initials: DE
authors.lastname: Hibbs
authors.forename: Paul K
authors.initials: PK
authors.lastname: Nguyen
authors.forename: Rajeshwar
authors.initials: R
authors.lastname: Narlawar
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