2-Cyclohexen-1-one, 4-[3-(acetyloxy)-1-buten-1-yl]-3,5,5-trimethyl-, pyrolyzed (CAS 163440-97-9) — Woody Middle to base Note Fragrance Ingredient
2-_Cyclohexen-_1-_one, 4-_[3-_(acetyloxy)_-_1-_buten-_1-_yl]_-_3,_5,_5-_trimethyl-_, pyrolyzed
CAS 163440-97-9
What Is 2-_Cyclohexen-_1-_one, 4-_[3-_(acetyloxy)_-_1-_buten-_1-_yl]_-_3,_5,_5-_trimethyl-_, pyrolyzed?
This synthetic fragrance ingredient is a specialized chemical used in modern perfumery to create unique olfactory effects. It’s found in avant-garde and niche fragrances pushing creative boundaries. While not commonly encountered by consumers, it represents perfumers’ ability to engineer novel scent molecules that don’t exist in nature.
Safety Profile
PROFESSIONAL USEWhat Does 2-_Cyclohexen-_1-_one, 4-_[3-_(acetyloxy)_-_1-_buten-_1-_yl]_-_3,_5,_5-_trimethyl-_, pyrolyzed Smell Like?
This synthetic molecule offers a complex olfactory profile with woody-ambery facets layered over a burnt sugar character. The acetyloxy butenyl side chain contributes a surprising fruity-sweet nuance that evolves into smoky, almost tar-like undertones during dry-down. Imagine charred maple wood drizzled with caramel that gradually reveals an industrial rubber note – challenging yet intriguing for experimental compositions.
Chemistry, Properties & Perfumer Guide
The Chemistry
This cyclohexenone derivative features an acetyloxy-substituted butenyl side chain at the 4-position, creating a hybrid structure combining cyclic ketone and ester functionalities. The trimethyl substitution pattern enhances molecular stability while influencing volatility. Synthesis typically involves condensation reactions of pre-functionalized cyclohexenone precursors with appropriate acetyloxy butenyl reagents, followed by pyrolysis to develop the characteristic smoky facets.
Physical & Chemical Properties
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.1-0.5% | Up to 1% | Used as an effect material |
| Functional Fragrance | Not used | N/A | Too specialized |
Classic Accords
Tip: Use micro-doses in woody-amber bases to add dimensionality without overwhelming the composition.
Alternatives & Comparisons
Simpler analogue with similar woody character but lacking the complex pyrolysis effects.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA. No specific usage limits established.
RIFM Assessment
No RIFM assessment available due to specialized usage.
Sustainability
As a synthetic material, production avoids natural resource depletion but requires energy-intensive chemical processes. The specialized nature means production volumes are low, minimizing environmental impact. Future green chemistry approaches could potentially improve synthesis routes.
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Ingredient Data Sheet
CAS 163440-97-9Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.
