Database/Fragrance/2,4-Dimethyl-3-Cyclohexene Carboxaldehyde
100% petroleum · ISO 16128

Is 2,4-Dimethyl-3-Cyclohexene Carboxaldehyde natural?

No. Both building blocks, acrolein and the methyl-pentadiene, are petrochemical C3 and C6 products; the molecule is not a plant terpene.

INCI name2,4-Dimethyl-3-Cyclohexene Carboxaldehyde
CAS68039-49-6
FormulaC9H14O · 138.21 Da
FunctionFragrance · Tonic
FeedstockDominant route: Diels-Alder reaction of acrolein with 2-methylpenta-1,3-diene,…

How we scored it

C9H14O, 138.21 Da: Diels-Alder adduct of acrolein (propylene) and 2-methyl-1,3-pentadiene (propylene or acetone). No natural fragment: 0 / 138.21 = 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

Dominant route: Diels-Alder reaction of acrolein with 2-methylpenta-1,3-diene, both derived from propylene or acetone. No natural or terpene-based route is known.

In plain English

A synthetic fragrance ingredient with a sharp, green, leafy scent. It is made by chemically joining two small petrochemical molecules rather than being extracted from a plant.

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Structure

2D structure of 2,4-Dimethyl-3-Cyclohexene Carboxaldehyde

2,4-dimethylcyclohex-3-ene-1-carbaldehyde

PubChem CID 93375 ↗

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. 22,4-Dimethyl-3-Cyclohexene Carboxaldehyde. PubChem CID 93375. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 32,4-DIMETHYL-3-CYCLOHEXENE CARBOXALDEHYDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 42,4-DIMETHYL-3-CYCLOHEXENE CARBOXALDEHYDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=2%2C4-DIMETHYL-3-CYCLOHEXENE%20CARBOXALDEHYDE