Synthetics
2-undecenal has a fruity, waxy, and slightly green aroma, often used as a food additive.
Luebke, William tgsc, (1989): Fresh fruity orange peel
Alfrebro: Powerful, fresh, aldehydic
Bedoukian Research: Fresh, fruity, citrus
Powerful and diffusive. useful in rose, lavender, clary sage, and opopanax compositions.