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Fragrance

METHYLPENTENYL-CYCLOPENTENONE

CAS 6261-18-3
55

Safety score · 0–100

Moderate

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

A methylpentenyl cyclopentenone with jasmine-floral character. Cyclopentenones are Michael acceptors — leans toward sensitizer; orange with default-down stance.

Skin benefits

  • Jasmine-floral fragrance character
  • Perfumery material

Known concerns

  • Cyclopentenone Michael-acceptor reactivity
  • Fragrance allergen potential
  • Skin sensitizer signal
  • Sparse cosmetic-grade 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, so always read the physical product label and consult a healthcare professional for personal concerns.