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4-Ethylguaiacol

4-Ethyl-2-methoxyphenol

4-Ethylguaiacol, p-Ethylguaiacol, Homocreosol

Methoxyphenol · C₉H₁₂O₂

Chemical structure of 4-Ethylguaiacol
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
2785-89-9
Molecular formula
C₉H₁₂O₂
Molecular weight
152.19 g/mol
Origin
Nature-identical
Odor family
Animalic
Note
Heart
Aroma
Smoky, clove-like, bacon-like with a leathery touch.

History

4-Ethylguaiacol forms when wood lignin is pyrolysed and when Brettanomyces yeast converts ferulic acid in wine. It contributes to the smoky odor of smoked foods.

In perfumery

In fragrance, 4-ethylguaiacol is used in traces for smoky, leathery and clove-like tones.

Connections

Evokesbirch tar, clove

Regulatory status

Unrestricted · No IFRA standard
IFRA 51
No dedicated IFRA Standard in the 51st Amendment index.
EU allergen 2023/1545
Not named individually in the expanded allergen list of Regulation 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 2785-89-9 (formula, names)
  2. Sell C.S. (ed.) The Chemistry of Fragrances: From Perfumer to Consumer, 2nd ed., Royal Society of Chemistry 2006
  3. The Good Scents Company Information System, material entries
  4. IFRA Standards, 51st Amendment: Index of IFRA Standards (notified 30 June 2023)