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Fragrance

4-FORMYL-2-METHOXYPHENYL ISOBUTYRATE

CAS 20665-85-4 Updated
70

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A vanillin isobutyrate ester used as a stable, warm vanilla note in perfumery. PubChem reports no GHS classification; main caveat is potential vanillin release on hydrolysis.

Function

PERFUMING

Skin benefits

  • Vanilla-spicy fragrance note in fine perfumery
  • Less prone to oxidation than free vanillin
  • Pleasant warm undertone

Known concerns

  • Synthetic fragrance ester
  • Hydrolysis can release vanillin (mild allergen)
  • Limited cosmetic-specific clinical data

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.