2-Methyl-4-phenylpentanol (CAS 92585-24-5) — Floral Heart to base Note Fragrance Ingredient
2-Methyl-4-phenylpentanol
CAS 92585-24-5
What Is 2-Methyl-4-phenylpentanol?
2-Methyl-4-phenylpentanol is a synthetic fragrance ingredient used in perfumes and personal care products. It contributes to floral and woody accords, often found in fine fragrances and home scents. This molecule matters because it adds complexity and longevity to fragrance compositions, helping create sophisticated scent profiles that evolve beautifully on skin.
Safety Profile
GENERALLY SAFEWhat Does 2-Methyl-4-phenylpentanol Smell Like?
2-Methyl-4-phenylpentanol offers a rich, floral-woody character with subtle fruity undertones. Initially, it presents a fresh, slightly green top note that quickly transitions into a heart of rosy florals with a hint of ripe pear. The dry-down reveals a warm, woody base with lingering sweetness, reminiscent of sandalwood and musk. Its evolution is smooth, making it excellent for creating balanced accords that maintain interest over time.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used here to enhance the floral heart with its woody sweetness, adding depth to the grapefruit and jasmine accord while ensuring longevity.
Contributes to the modern floral bouquet, blending seamlessly with rose and jasmine to create a luminous, woody-floral signature.
Adds a subtle woody sweetness that complements the patchouli and iris, enhancing the gourmand-floral balance.
Used to bolster the floral explosion with its woody-floral character, adding warmth and depth to the patchouli base.
Enhances the vanilla and coffee accord with its woody sweetness, contributing to the addictive, long-lasting dry-down.
2D Molecular Structure
SMILES: CC(CO)CC(C)C1=CC=CC=C1
Chemistry, Properties & Perfumer Guide
The Chemistry
2-Methyl-4-phenylpentanol is a synthetic aromatic alcohol belonging to the phenylpentanol class. It is not found in nature and is typically synthesized through Grignard reactions or hydrogenation of corresponding aldehydes. The molecule features a phenyl group attached to a pentanol chain with a methyl substitution, contributing to its unique olfactory properties. Its structure allows for good stability and blending capabilities in fragrance formulations.
Physical & Chemical Properties
| Boiling Point | Not available |
|---|---|
| Density | Not available |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Adds woody-floral depth |
| Personal Care | 0.5-2% | Up to 3% | Enhances floral accords |
| Home Fragrance | 0.5-1.5% | Up to 2% | Contributes to longevity |
Classic Accords
Tip: Use in floral-woody accords to enhance depth and longevity without overpowering delicate top notes.
Alternatives & Comparisons
A simpler floral alcohol with less woody character, suitable when a lighter floral note is desired.
Offers a softer floral character with good fixative properties, useful in more delicate compositions.
Provides a stronger woody character for formulations requiring more pronounced wood notes.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions currently apply to 2-Methyl-4-phenylpentanol.
RIFM Assessment
RIFM has not published a specific safety assessment for this ingredient, but structurally similar compounds are generally recognized as safe at current usage levels.
Sustainability
As a synthetic ingredient, 2-Methyl-4-phenylpentanol offers consistent quality and supply without relying on natural resources. Its production can be optimized for minimal environmental impact through green chemistry principles. Being petroleum-derived, its sustainability depends on the energy sources used in synthesis.
Explore 2-Methyl-4-phenylpentanol
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References
- Bauer, K. et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH. ISBN 978-3-527-30364-6
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID1052616
Physical Properties
| Molecular Weight | 178.275 g/mol🔬 EPA CompTox |
| Density | 0.961 g/cm^3🔬 EPA CTX |
| Boiling Point | 266.807 °C📊 OPERA |
| Melting Point | 34.487 °C📊 OPERA |
| Flash Point | 121.268 °C📊 OPERA |
| Refractive Index | 1.509 Dimensionless📊 OPERA |
| Molar Volume | 186.909 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.01 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 3.134 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.339 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 8.4 Log10 unitless📊 OPERA |
| Water Solubility | 0.004 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.002 mmHg🔬 EPA CTX |
| Viscosity | 10.802 cP📊 OPERA |
| Surface Tension | 35.266 dyn/cm📊 OPERA |
| Thermal Conductivity | 140.163 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 20.23 Ų💻 Computed |
| H-Bond Donors | 1 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 4 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 55.83 cm^3/mol📊 OPERA |
| Polarizability | 22.133 Å^3📊 OPERA |
Data Sources:
🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.
