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ETHYL 2-METHYLPENT-3-ENOATE

CAS 1617-23-8
65

Safety score · 0–100

Fine

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

About

Ethyl 2-methylpent-3-enoate is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Ethyl 2-methylpent-3-enoate is the positional isomer of ethyl 2-methylpent-4-enoate, sharing similar fruity odor profiles and used in fragrance compositions. It carries H226 (flammable liquid) classification. EU cosmetic ingredient reviews for unsaturated esters indicate limited systemic toxicity but potential for skin oxidation products that may act as sensitizers. The double bond position (pent-3-enoate vs pent-4-enoate) does not materially change the risk profile. Not currently restricted under EU Annexes.

Known concerns

  • Flammable liquid (H226)
  • Potential oxidation products may act as skin sensitizers
  • Limited long-term safety 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.