Aldehyde C-11

At a glance

Aldehyde C‑11 (undecanal) is a synthetic medium‑chain aliphatic aldehyde, also found in trace amounts in coriander leaf oil, giving a waxy, citrus‑green, slightly floral aldehydic note used to brighten florals and chypres.

Category
⚗️ Synthetic
Origin
Synthesized in laboratories
Extraction
Chemical synthesis
Chemical family
Aldehyde
CAS number
112-45-8
Profile
Waxy, floral, slightly metallic aldehydic scent
IFRA status
Not restricted
Cost tier
Low
● drafted · last checked 2026-08-22