Hexen-2-al

At a glance

2‑Hexenal (hexen‑2‑al) is a synthetic unsaturated aldehyde with a fresh green‑apple, leafy aroma, used to impart crisp, fruity‑green notes in many modern fragrances.

Category
⚗️ Synthetic
Origin
Synthetic, produced via oxidation of hexenol from petrochemical feedstock
Extraction
Chemical synthesis
Chemical family
Aliphatic unsaturated aldehyde
CAS number
6728-26-3
IFRA status
Restricted, concentration limits under IFRA standards (listed as "2-Hexenal", CAS 6728-26-3)
● drafted · last checked 2026-09-11