(1R,4E,9S)-4,11,11-- Trimethyl- 8-methylenebicyclo [7.2.0]undec- 4-ene

28

Avoid

CAS Number: 87-44-5

About (1R,4E,9S)-4,11,11-- Trimethyl- 8-methylenebicyclo [7.2.0]undec- 4-ene

A cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.

Detailed Analysis

(1R,4E,9S)-4,11,11-Trimethyl-8-methylenebicyclo[7.2.0]undec-4-ene is a sesquiterpene found in clove, rosemary, and cannabis. It carries EU CLP classifications H304 (aspiration toxicity) and H317 (skin sensitization). IFRA restricts its use due to sensitization. Not recommended for use in lip or oral care products.

Skin Benefits

  • ✓ Fragrance ingredient
  • ✓ Anti-inflammatory properties reported in literature

Known Concerns

  • ⚠ Aspiration toxicity hazard (H304)
  • ⚠ Skin sensitization hazard (H317)
  • ⚠ IFRA restriction applies
  • ⚠ Not for use in lip/oral products

Safety Score

28

Avoid

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.