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Isolongifolanone

2,2,7,7-Tetramethyltricyclo[6.2.1.0¹,⁶]undecan-5-one

Isolongifolanone

Sesquiterpene ketone (longifolane) · C₁₅H₂₄O

Chemical structure of Isolongifolanone
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
23787-90-8
Molecular formula
C₁₅H₂₄O
Molecular weight
220.36 g/mol
Origin
Synthetic
Odor family
Woody
Note
Base
Aroma
Dry wood with amber, camphor and patchouli-like nuances.

History

Isolongifolanone is made from longifolene, a sesquiterpene abundant in Indian turpentine (Pinus roxburghii), by isomerisation and oxidation.

In perfumery

It is used as an inexpensive dry woody base in fragrance and household products.

Connections

Evokespatchouli

Regulatory status

Unrestricted · No IFRA standard
IFRA 51
No dedicated IFRA Standard in the 51st Amendment index.
EU allergen 2023/1545
Not named individually in the expanded allergen list of Regulation 2023/1545.

Sources

  1. Wikidata Q27261635 (CAS 23787-90-8, formula; data mirrored from PubChem)
  2. Sell C.S. (ed.) The Chemistry of Fragrances: From Perfumer to Consumer, 2nd ed., Royal Society of Chemistry 2006
  3. The Good Scents Company Information System, material entries
  4. IFRA Standards, 51st Amendment: Index of IFRA Standards (notified 30 June 2023)