8H-Indeno(4,5-B)furan,2,3,3a,4,5,5a,6,7,8a,9-decahydro-2,6,6,7,8,8-hexamethyl Mixture of isomers

At a glance

Synthetic polycyclic furan made by Diels‑Alder cycloaddition, hydrogenation and methylation; gives a woody‑ambergris character with sweet, dry‑down amber, leather and tobacco notes, used as a base note in fine perfumery.

Category
⚗️ Synthetic
Origin
Synthetic (produced via Diels‑Alder cycloaddition, hydrogenation and methylation)
Extraction
Chemical synthesis
Chemical family
Furan/Heterocyclic
CAS number
338735-71-0
IFRA status
Restricted, concentration limits under IFRA standards (listed as "Woody furan", CAS 338735-71-0)
● drafted · last checked 2026-09-11