1-Cyclohexylethyl 2-butenoate (CAS 68039-69-0) — Green Top to middle Note Fragrance Ingredient
1-Cyclohexylethyl 2-butenoate
CAS 68039-69-0
What Is 1-Cyclohexylethyl 2-butenoate?
1-Cyclohexylethyl 2-butenoate is a synthetic fragrance ingredient used in modern perfumery. It’s found in various personal care products and fine fragrances, contributing unique olfactory characteristics. This ester compound matters because it offers perfumers a versatile building block for creating contemporary scent profiles, often adding fruity or floral nuances to compositions.
Safety Profile
GENERALLY SAFEWhat Does 1-Cyclohexylethyl 2-butenoate Smell Like?
This synthetic ester presents a fresh, slightly fruity character with green undertones. The initial burst suggests unripe berries wrapped in crisp leaves, evolving into a cleaner, almost soapy floralcy reminiscent of laundry fresh from the line. As it dries down, a subtle woody backbone emerges, providing structure without heaviness. The overall effect is bright and transparent – like sunlight filtering through young foliage.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a fresh floral modifier in this contemporary feminine fragrance, contributing clean laundry accents that complement the jasmine and lily heart.
Provides subtle fruity-green facets that enhance the citrus opening and support the woody-amber drydown in this iconic summer fragrance.
Chemistry, Properties & Perfumer Guide
The Chemistry
1-Cyclohexylethyl 2-butenoate belongs to the ester class of fragrance compounds, synthesized through esterification reactions between cyclohexylethanol and 2-butenoic acid. The cyclohexyl moiety contributes woody-herbaceous characteristics while the butenoate portion provides fruity-green notes. As a synthetic material, it offers consistent quality and olfactory performance compared to natural alternatives.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Odor Strength | Medium |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Fresh floral modifier |
| Functional Fragrances | 0.1-1% | Up to 3% | Laundry and cleaning products |
Classic Accords
Tip: Use to brighten floral compositions without adding excessive sweetness.
Alternatives & Comparisons
Offers similar fruity-green characteristics but with more pronounced apple-like notes and slightly higher volatility.
Provides cleaner, more floral aspects without the green fruity character, useful when a simpler woody-floral effect is desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA standards.
RIFM Assessment
No RIFM assessment currently available for this material.
Sustainability
As a synthetic material, 1-Cyclohexylethyl 2-butenoate offers consistent production with minimal batch variation. Its synthesis avoids agricultural land use and seasonal variability associated with natural materials. However, like all synthetic esters, its environmental impact depends on responsible manufacturing processes and proper disposal.
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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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