Database/Perfuming/P-Cresyl Isobutyrate
100% petroleum · ISO 16128

Is P-Cresyl Isobutyrate natural?

No. Both the phenolic and acid halves of this ester are sourced from petrochemical feedstocks in commercial fragrance production.

INCI nameP-Cresyl Isobutyrate
CAS103-93-5
FormulaC11H14O2 · 178.23 Da
FunctionPerfuming
FeedstockMade by esterifying petrochemical p-cresol with isobutyric acid,…

How we scored it

p-Cresol (petrochemical) esterified with isobutyric acid (petrochemical, oxo-process); fully synthetic ester, 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 esterifying petrochemical p-cresol with isobutyric acid, typically produced from petrochemical propylene via the oxo process. No natural isolation route is used commercially.

In plain English

A synthetic fragrance ingredient with a fruity, floral scent, made entirely from petroleum-derived chemicals.

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Structure

2D structure of P-Cresyl Isobutyrate

(4-methylphenyl) 2-methylpropanoate

PubChem CID 7685 ↗

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. 2P-Cresyl Isobutyrate. PubChem CID 7685. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3P-CRESYL ISOBUTYRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4P-CRESYL ISOBUTYRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=P-CRESYL%20ISOBUTYRATE