trans-2-Hexenoic acid

At a glance

A short‑chain unsaturated fatty acid found in cheese and some fruits, trans‑2‑hexenoic acid has a sharp, cheesy‑sweaty odor and is used to add dairy, sweat and animalic notes in perfumery.

Category
⚗️ Synthetic
Origin
Cheese, some fruits; also synthetic
Extraction
Chemical synthesis
Chemical family
Acid
CAS number
13419-69-7
IFRA status
Not restricted
● drafted · last checked 2026-09-01