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Myrtenyl acetate

(1R)-6,6-Dimethylbicyclo[3.1.1]hept-2-en-2-ylmethyl ethanoate

2-Pinen-10-yl acetate

Bicyclic monoterpenoid alkene ester · C₁₂H₁₈O₂

Chemical structure of Myrtenyl acetate
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
36203-31-3
Molecular formula
C₁₂H₁₈O₂
Molecular weight
194.27 g/mol
Aroma
Lightly pine wood, faintly camphoraceous, with a floral hint. A main note in myrtle oil.

Safety

Low concern · Safe at standard use

Myrtenyl acetate is a bicyclic monoterpenoid ester occurring primarily in myrtle and valerian oils.

Skin. A 10 percent patch test on 26 volunteers caused no irritation and no sensitization.

Acute toxicity. Acute oral LD50 in rats ranges from 1.0 to 2.6 g/kg. Acute dermal LD50 in rabbits exceeded 5 g/kg.

Usage guidelines

Concern level
Low, limited data
Toxicity level
Slight

Found in essential oils

Principal sources
Myrtle0.1 – 21.1 %
Valerian (European)tr – 9.1 %
Lavender (Spanish)2.0 – 4.3 %
Thyme (thujanol CT)4.0 %
Thyme (geraniol CT)2.0 %

Notes

Myrtenyl acetate is a chemical marker for myrtle oil. The ratio of myrtenyl acetate to 1,8-cineole distinguishes Tunisian myrtle (high myrtenyl acetate) from Moroccan myrtle (high 1,8-cineole).