8-Undecenal

At a glance

A synthetic unsaturated aldehyde with a fresh, citrus‑green, slightly fatty aroma, used to impart bright top notes and enhance floral compositions. It is valued by perfumers for this distinctive character and used as a building block within larger fragrance compositions.

Category
⚗️ Synthetic
Origin
Synthetic, produced by oxidation of 8‑undecanol from petrochemical feedstock
Extraction
Chemical synthesis
Chemical family
Aldehyde
CAS number
58296-81-4
Profile
aldehydic, waxy
IFRA status
Not restricted
● drafted · last checked 2026-09-01