Pyridine, 4-ethenyl-, reaction products with 3a,4,7,7a-tetrahydrodimethyl-4,7-methano-1H-indene (CAS 125352-06-9) — Woody Variable Note Fragrance Ingredient
Pyridine, 4-ethenyl-, reaction products with 3a,4,7,7a-tetrahydrodimethyl-4,7-methano-1H-indene
CAS 125352-06-9
What Is Pyridine, 4-ethenyl-, reaction products with 3a,4,7,7a-tetrahydrodimethyl-4,7-methano-1H-indene?
This synthetic ingredient is a specialized fragrance compound used in modern perfumery. It’s typically found in niche and avant-garde fragrances where unique molecular structures create unconventional scent profiles. The material offers perfumers a tool for creating contemporary, abstract accords that push beyond traditional floral or woody compositions.
Safety Profile
PROFESSIONAL USEWhat Does Pyridine, 4-ethenyl-, reaction products with 3a,4,7,7a-tetrahydrodimethyl-4,7-methano-1H-indene Smell Like?
This synthetic molecule presents a sharp, metallic edge with complex aromatic nuances. The initial impression suggests hot iron filings with an underlying medicinal quality, evolving into a dry, woody-amber character. As it dries down, subtle pyridine-like facets emerge – think of the electric tang of ozone after a thunderstorm blended with the faintest whisper of aged leather. The dry-down reveals surprising tenacity, leaving an almost mineralic trail reminiscent of volcanic rocks warmed by the sun.
Chemistry, Properties & Perfumer Guide
The Chemistry
This compound belongs to the pyridine derivative class, created through specialized reactions between vinylpyridine and dimethylmethanoindene precursors. The synthesis involves controlled cycloaddition reactions that create complex bicyclic structures. The resulting molecule exhibits unique electronic properties due to the nitrogen-containing aromatic system conjugated with the indene-derived framework. While exact stereochemistry isn’t publicly documented, the reaction likely produces multiple stereoisomers contributing to its multifaceted olfactory profile.
Physical & Chemical Properties
| Appearance | Not documented |
|---|---|
| Molecular Weight | Not documented |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Experimental Fragrance | 0.1-0.5% | Up to 1% | Used for avant-garde effects |
| Functional Products | Not recommended | N/A | Not typically used |
Classic Accords
Tip: Use sparingly as a modifier in modern woody-amber bases to add cutting-edge metallic facets.
Alternatives & Comparisons
Simpler pyridine structure for sharper medicinal effects without the complex woody-amber dry-down.
Provides amber-woody character without metallic nuances for more conventional applications.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific IFRA restrictions documented. Use professional judgment due to limited safety data.
RIFM Assessment
No RIFM assessment publicly available for this specific compound.
Sustainability
As a synthetic material, this compound’s environmental impact depends on manufacturing processes. The specialized synthesis suggests moderate energy requirements. Being used in trace amounts minimizes ecological burden. No known natural alternatives exist for its unique olfactory profile.
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Ingredient Data Sheet
CAS 125352-06-9Physical 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.
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