Database/Perfuming/Isojasmone
100% petroleum · ISO 16128

Is Isojasmone natural?

No. A synthetic cyclopentenone ketone assembled from petrochemical C5 and C6 building blocks, with no natural-origin atoms.

INCI nameIsojasmone
CAS11050-62-7
FormulaC11H16O · 164.24 Da
FunctionPerfuming
FeedstockMade by aldol condensation of cyclopentanone with hexanal…

How we scored it

Formula C11H16O is a jasmone-type cyclopentenone; commercial isojasmone is built from cyclopentanone + hexanal; all petrochemical, natural 0 / 164.2 = 0.0.
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 aldol condensation of cyclopentanone with hexanal followed by isomerisation, both from petrochemical streams. Isolation from jasmine absolute is not commercially significant.

In plain English

A synthetic fragrance ingredient with a warm, jasmine-like floral scent, used in perfumes and scented products. It is made in a factory from small petrochemical building blocks.

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Structure

2D structure of Isojasmone

2-methyl-3-pent-2-enylcyclopent-2-en-1-one

PubChem CID 61531 ↗

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. 2Isojasmone. PubChem CID 61531. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ISOJASMONE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ISOJASMONE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ISOJASMONE