Farnesal

At a glance

Synthetic sesquiterpene aldehyde with a fresh, citrus‑green, slightly woody aroma, used as a brightening middle note in many modern fragrances. It is valued by perfumers for this distinctive character and used as a building block within larger fragrance compositions.

Category
⚗️ Synthetic
Origin
laboratory production
Extraction
Chemical synthesis
Chemical family
Sesquiterpene aldehyde
CAS number
19317-11-4
Profile
floral, woody, green
IFRA status
Restricted, concentration limits under IFRA standards (listed as "Farnesal", CAS 19317-11-4)
● drafted · last checked 2026-08-26