3(or 4)-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (CAS 130066-44-3) — Floral Middle Note Fragrance Ingredient
3(or 4)-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde
CAS 130066-44-3
What Is 3(or 4)-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde?
3(or 4)-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde is a synthetic fragrance ingredient used in modern perfumery. It’s found in various personal care products and fine fragrances, contributing to complex scent profiles. This aldehyde is valued for its ability to enhance floral and woody accords while adding diffusion and longevity to fragrance compositions.
Safety Profile
USE WITH AWARENESSWhat Does 3(or 4)-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde Smell Like?
This aldehyde presents a sophisticated bouquet that evolves intriguingly on the skin. Initially, it offers a fresh, slightly citrus-tinged greenness reminiscent of crushed leaves, which quickly melds into a floral heart with lily-of-the-valley nuances. The dry-down reveals its true character – a warm, woody-ambery base with subtle musk undertones that provide excellent tenacity. The overall effect is clean yet complex, with a radiant quality that lifts compositions without overpowering them.
Chemistry, Properties & Perfumer Guide
The Chemistry
This synthetic aldehyde belongs to the cyclohexene carboxaldehyde class, specifically designed for perfumery applications. The molecule features both aldehyde and hydroxyl functional groups attached to a cyclohexene ring system, creating unique odor properties. Industrial synthesis typically involves multi-step processes including Diels-Alder reactions and selective hydrogenation. The 4-hydroxy-4-methylpentyl side chain contributes significantly to the molecule’s diffusion and substantivity.
Physical & Chemical Properties
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Used as floral-woody modifier |
| Personal Care | 0.1-0.5% | Up to 1% | Provides clean, fresh character |
Classic Accords
Tip: Use in conjunction with ionones to enhance floralcy without excessive sweetness.
Alternatives & Comparisons
Similar floral-lily character but with greater diffusion and slightly sweeter profile.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific restrictions under current IFRA standards (Amendment 49).
RIFM Assessment
RIFM safety assessment completed – approved for use at recommended levels.
Sustainability
As a synthetic material, this ingredient avoids natural resource depletion concerns. Modern manufacturing processes aim to minimize environmental impact through efficient catalysis and waste reduction. The molecule’s substantivity helps reduce overall fragrance load in products.
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Ingredient Data Sheet
CAS 130066-44-3Physical 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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