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METHYL METHYL-TRIMETHYLCYCLOHEXENYL-VINYLOXIRANE-2-CARBOXYLATE

CAS 67905-40-2
58

Safety score · 0–100

Moderate

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

About

A complex polycyclic synthetic fragrance material with multiple reactive functional groups, used at low levels in cosmetics but requiring caution due to sensitisation and oxidation potential.

This complex polycyclic carboxylate ester contains multiple reactive sites including an epoxide (oxirane), a vinyl group, and a cyclohexenyl moiety. Such structures can undergo oxidation during storage, forming potential skin sensitisers. While not individually restricted in EU Annex III, it falls under general fragrance allergen provisions. The combination of an epoxide and alkene functionality raises concern for metabolic activation to skin-sensitising metabolites.

Skin benefits

  • Complex fragrance profile valued in fine fragrances
  • Contributes to distinctive aromatic character in cosmetic products

Known concerns

  • Multiple reactive functional groups — epoxide and alkene — may form sensitisers on oxidation
  • General fragrance allergen considerations under EU Regulation 1223/2009
  • Limited chronic toxicology data for this specific structure

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.