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Fragrance

ISOPROPYL 3-METHYLTHIOBUTYRATE

CAS 34322-06-0
50

Safety score · 0–100

Moderate

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

A sulfur-containing thio-ester used as a tropical fruit fragrance note. PubChem flags skin and eye irritation in most reports — used at very low ppm levels in fragrance.

Function

PERFUMING

Skin benefits

  • Provides sulfurous-fruity tropical scent
  • Used in modern fragrance accords

Known concerns

  • GHS H315 causes skin irritation (78% of reports)
  • GHS H319 serious eye irritation
  • GHS H226 flammable liquid
  • Sulfurous compound — odor threshold extremely low

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, so always read the physical product label and consult a healthcare professional for personal concerns.