Ethyl 2-trans-4-cis-decadienoate is a volatile compound that has been found in pears and has kairomonal attractant activity.1 Ethyl 2-trans-4-cis-decadienoate attracts male and female codling moths (C. pomonella), an apple, pear, and walnut pest, to traps placed in orchards when applied at a concentration of 40 mg/trap. It also attracts C. splendana males and females, as well as P. fasciana males.
1.Schmidt, S., Anfora, G., Ioriatti, C., et al.Biological activity of ethyl (e,z)-2,4-decadienoate on different tortricid species: Electrophysiological responses and field testsEnviron. Entomol.36(5)1025-1031(2007)