structure structure (organic substances) K 9000 46 -031 11,7 ]dodeca-2,4,6-trien-10-one.-The structure of the title compound (I), unexpected reaction product of salicylaldehyde and pyruvic acid, is elucidated by X-ray diffraction analysis. -(EILERS, F.; BACH, T.; FROEHLICH, R.; Acta Crystallogr., Sect. C: Cryst.