Olfactionarytrans-2-Undecenal
At a glance
Synthetic aliphatic aldehyde (E)-2‑undecenal, made by oxidation of undec‑2‑ene and also present in orange peel; provides fresh green‑apple, cucumber and citrus nuances, adding bright crispness to fragrances.
Why synthetics aren't a downgrade — a different toolkit → · Why some materials get IFRA-restricted →