Synthetics
2,4-hexadienal has no known odor description.
Luebke, William tgsc, (1989): Fatty sweet green aldehydic spicy
Bedoukian Research: Fatty, sweet, green aldehydic odor with a spicy finish
This material should not be used as a fragrance ingredient due to the absence of data necessary to perform an adequate safety evaluation per ifra safety standards in annex 1 of the code of practice.