Database/Perfuming/Cinnamyl Isobutyrate
Route-dependent · ISO 16128

Is Cinnamyl Isobutyrate natural?

It depends. Cinnamyl alcohol is route-dependent on the site; isobutyric acid is petrochemical.

INCI nameCinnamyl Isobutyrate
CAS103-59-3
FormulaC13H16O2 · 204.26 Da
FunctionPerfuming
FeedstockCinnamyl alcohol (storax/cassia or synthetic) esterified with petrochemical…

Why the score varies

This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.

RouteFeedstockNOIShareNotes
natural cinnamylcinnamyl of natural origin + isobutyric acid from petrochemical synthesis0.65Cinnamyl fragment C9H9O 133.2/204.3 = 0.65.
syntheticcinnamyl and isobutyric acid both from petrochemical synthesis0.00No natural carbon.
Ask your supplier. A batch-specific certificate of origin or bio-based carbon test (ASTM D6866) settles which route applies.

How we scored it

Cinnamyl Isobutyrate C13H16O2 204.3 Da: cinnamyl fragment C9H9O 133.2 Da is natural only from an essential-oil, balsam or turpentine source; the isobutyric acid fragment 71.1 Da is petrochemical in every commercial route. Routes: natural cinnamyl 0.65, synthetic 0.00. Headline shows the best route.
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

Cinnamyl alcohol (storax/cassia or synthetic) esterified with petrochemical isobutyric acid.

In plain English

A fragrance ingredient with a sweet, balsamic scent, made by reacting cinnamyl alcohol with isobutyric acid. Used in perfumed cosmetics and personal care products to add scent.

Natural alternatives with the same function

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 Abies Alba Leaf Oil 100% natural origin

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 Abies Alba Needle Extract 100% natural origin

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 Abies Balsamea Needle Extract 100% natural origin

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Structure

2D structure of Cinnamyl Isobutyrate

[(E)-3-phenylprop-2-enyl] 2-methylpropanoate

PubChem CID 5355851 ↗

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. 2Cinnamyl Isobutyrate. PubChem CID 5355851. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CINNAMYL ISOBUTYRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CINNAMYL ISOBUTYRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CINNAMYL%20ISOBUTYRATE