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p-Cresyl isobutyrate

4-Methylphenyl 2-methylpropanoate

p-Cresyl isobutyrate, p-Tolyl isobutyrate

Phenolic ester · C₁₁H₁₄O₂

Chemical structure of p-Cresyl isobutyrate
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
103-93-5
Molecular formula
C₁₁H₁₄O₂
Molecular weight
178.23 g/mol
Origin
Synthetic
Odor family
Animalic
Note
Heart
Aroma
Animalic floral with fruity and light stable facets, slightly narcissus-like.

History

p-Cresyl isobutyrate belongs to the p-cresol esters and is used in both flavors (FEMA 3075) and fragrance.

In perfumery

It is used at low levels to add a soft animal tone to floral accords.

Connections

Evokesnarcissus

Regulatory status

No IFRA standard · Parent phenol restricted
IFRA 51
No dedicated Standard for this ester. p-Cresol (the parent phenol) has a Restriction Standard, published 2023.
EU allergen 2023/1545
Not named individually in the expanded allergen list of Regulation 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 103-93-5 (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)