3-(4-Methyl-3-pentenyl)-3-cyclohexene-1-carbonitrile (CAS 68084-04-08) — Green Top to middle Note Fragrance Ingredient
3-(4-Methyl-3-pentenyl)-3-cyclohexene-1-carbonitrile
CAS 68084-04-08
What Is 3-(4-Methyl-3-pentenyl)-3-cyclohexene-1-carbonitrile?
3-(4-Methyl-3-pentenyl)-3-cyclohexene-1-carbonitrile is a synthetic fragrance ingredient used in modern perfumery to create fresh, green, and slightly woody accords. It’s found in some contemporary citrus and fougère fragrances. This molecule matters because it helps perfumers achieve crisp, natural-smelling green effects without relying on restricted natural materials.
Safety Profile
USE WITH AWARENESSWhat Does 3-(4-Methyl-3-pentenyl)-3-cyclohexene-1-carbonitrile Smell Like?
This synthetic nitrile opens with a sharp, green burst reminiscent of crushed galbanum stems and unripe citrus peel. The initial intensity quickly mellows into a clean, woody-herbaceous heart with subtle floral undertones. Dry-down reveals a dry, slightly powdery texture with faint echoes of violet leaf and freshly cut cucumber. Its linear character makes it excellent for maintaining consistent green notes throughout a fragrance’s evolution.
Chemistry, Properties & Perfumer Guide
The Chemistry
As a cyclohexene carbonitrile derivative, this molecule belongs to the family of synthetic green nitriles developed in the late 20th century. Its structure combines a cyclohexene ring with an unsaturated side chain terminated by a nitrile group, which contributes to both its volatility and green character. Industrial synthesis typically involves Diels-Alder reactions of appropriate dienes with acrylonitrile derivatives.
Physical & Chemical Properties
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Green note modifier |
| Functional Fragrance | 0.1-1% | Up to 3% | Freshness booster |
Classic Accords
Tip: Use with citrus top notes to prolong their fresh-green character into the heart phase.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No current IFRA restrictions (as of Amendment 51).
RIFM Assessment
Under review by RIFM – limited safety assessment available.
Sustainability
As a fully synthetic material, this nitrile avoids agricultural resource use but requires petrochemical feedstocks. Its production efficiency and stability make it a lower-impact alternative to some natural green materials with similar olfactory profiles.
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