3,7-Dimethyloct-6-enyl acetate (CAS 67601-05-02) — Citrus Top to Middle Note Fragrance Ingredient
3,7-Dimethyloct-6-enyl acetate
CAS 67601-05-02
What Is 3,7-Dimethyloct-6-enyl acetate?
3,7-Dimethyloct-6-enyl acetate is a synthetic fragrance ingredient with a fresh, floral-citrus character. It’s commonly found in personal care products like shampoos, soaps, and body sprays. This versatile material helps create natural-smelling floral bouquets while adding diffusion and lift to fragrance compositions.
Safety Profile
GENERALLY SAFEWhat Does 3,7-Dimethyloct-6-enyl acetate Smell Like?
3,7-Dimethyloct-6-enyl acetate opens with a bright, sparkling citrus-lime top note reminiscent of freshly peeled bergamot zest. This quickly evolves into a floral heart with rose-like facets and a subtle green undertone. The dry-down reveals a clean, woody-musky base with excellent tenacity. The overall effect is fresh yet sophisticated, combining the vibrancy of citrus with the elegance of white florals.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a citrus-floral bridge between bergamot top notes and herbal heart notes, adding diffusion and natural freshness to this energizing cologne.
Provides a clean, modern floralcy that complements the green tea and papaya notes, helping create the fragrance’s signature unisex appeal.
Chemistry, Properties & Perfumer Guide
The Chemistry
3,7-Dimethyloct-6-enyl acetate is a monoterpenoid ester synthesized through acetylation of the corresponding alcohol (3,7-dimethyloct-6-en-1-ol). The molecular structure features a branched carbon chain with a terminal double bond and acetate group, contributing to its moderate volatility and fresh-floral odor characteristics. Industrial synthesis typically involves catalytic hydrogenation of citronellol followed by acetylation.
Physical & Chemical Properties
| Boiling Point | Approx. 220-230 °C (estimated) |
|---|---|
| Density | Approx. 0.88-0.90 g/cm³ (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Adds freshness in floral compositions |
| Personal Care | 0.5-3% | Up to 5% | Used in shower gels, deodorants |
Classic Accords
Tip: Use in citrus-floral bases to add diffusion and natural freshness without excessive sweetness.
Alternatives & Comparisons
More lavender-like character with similar volatility, preferred for more traditional floral compositions.
Stronger rosy character, useful when more pronounced floralcy is desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA. No usage limits established.
RIFM Assessment
Not yet evaluated by RIFM. Limited toxicological data available.
Sustainability
As a synthetic material, production is not dependent on natural resources. Typical synthesis routes use petrochemical feedstocks. Environmental impact depends on manufacturing processes and waste management. No known ecological toxicity at usage levels.
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References
- Bauer, K. et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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