Database/Fragrance/Dihydro Pentamethylindanone
100% petroleum · ISO 16128

Is Dihydro Pentamethylindanone natural?

No. The pentamethyl-cyclopentane-fused cyclohexanone is assembled from petrochemical olefins and ketones, not from any plant-isolated terpene, so no fragment is natural-origin.

INCI nameDihydro Pentamethylindanone
CAS33704-61-9
FormulaC14H22O · 206.32 Da
FunctionFragrance · Perfuming
FeedstockMade entirely by multi-step synthesis from small petrochemical…

How we scored it

C14H22O 206.32 Da: bicyclic ketone skeleton built from petrochemical C4-C6 olefins and ketones; no natural fragment. 0 / 206.32 = 0.00.
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 entirely by multi-step synthesis from small petrochemical olefins and ketones. No commercially used route starts from plant terpenes.

In plain English

A synthetic fragrance ingredient (known in perfumery as Cashmeran) with a warm, woody, musky and spicy note. It is made in a chemical plant from small petroleum-derived building blocks.

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Structure

2D structure of Dihydro Pentamethylindanone

1,1,2,3,3-pentamethyl-2,5,6,7-tetrahydroinden-4-one

PubChem CID 92292 ↗

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. 2Dihydro Pentamethylindanone. PubChem CID 92292. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DIHYDRO PENTAMETHYLINDANONE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DIHYDRO PENTAMETHYLINDANONE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DIHYDRO%20PENTAMETHYLINDANONE