Database/Fragrance/Acetyl Cedrene
Mostly natural · ISO 16128

Is Acetyl Cedrene natural?

Mostly. Cedrene is isolated from cedarwood oil; the acetyl group is installed using petrochemical acetic anhydride.

INCI nameAcetyl Cedrene
CAS32388-55-9
FormulaC17H26O · 246.4 Da
FunctionFragrance
FeedstockMade by Friedel-Crafts acetylation of natural cedrene isolated…

How we scored it

Cedrenyl ring fragment C15H23 203 Da (natural, cedarwood-oil terpene) + acetyl group C2H3O 43 Da (petrochemical, from acetic anhydride) -> 203/246 = 0.83.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Made by Friedel-Crafts acetylation of natural cedrene isolated from cedarwood oil, using petrochemical acetic anhydride. No alternative synthetic route is commercially significant.

In plain English

A woody fragrance ingredient made by acetylating cedrene, a compound isolated from cedarwood oil.

CosIng definition: Acetyl Cedrene is the organic compound that conforms to the formula

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Structure

2D structure of Acetyl Cedrene

1-[(1R,2R,5S,7R)-2,6,6,8-tetramethyl-9-tricyclo[5.3.1.01,5]undec-8-enyl]ethanone

PubChem CID 16220111 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Acetyl Cedrene. PubChem CID 16220111. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ACETYL CEDRENE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ACETYL CEDRENE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ACETYL%20CEDRENE