Dihydro-4-methyl-5-pentylfuran-2(3H)-one (CAS 33673-62-0) — Sweet Heart Note Fragrance Ingredient
Dihydro-4-methyl-5-pentylfuran-2(3H)-one
CAS 33673-62-0
What Is Dihydro-4-methyl-5-pentylfuran-2(3H)-one?
Dihydro-4-methyl-5-pentylfuran-2(3H)-one is a synthetic fragrance ingredient used to add creamy, fruity nuances to perfumes. It’s found in luxury body lotions, candles, and fine fragrances. This compound matters because it mimics natural lactones found in fruits like peaches, enhancing sweetness without being cloying.
Safety Profile
GENERALLY SAFEWhat Does Dihydro-4-methyl-5-pentylfuran-2(3H)-one Smell Like?
A creamy, fruity aroma with peach-like sweetness and a hint of coconut. The scent evolves from initial juicy brightness to a smooth, lactonic richness. Dry-down reveals a soft, woody undertone that lingers subtly.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the peach accord, providing a creamy depth that balances the floral heart.
2D Molecular Structure
SMILES: CCCCCC1OC(=O)CC1C
Chemistry, Properties & Perfumer Guide
The Chemistry
Dihydro-4-methyl-5-pentylfuran-2(3H)-one is a synthetic lactone. It belongs to the furanone class, known for their creamy, fruity odors. Typically synthesized via esterification or cyclization of appropriate precursors to achieve the desired olfactory profile.
Physical & Chemical Properties
| Boiling Point | N/A |
|---|---|
| Density | N/A |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Adds creamy fruity nuances |
| Body Care | 0.5-2% | Up to 3% | Enhances sweetness in lotions |
Classic Accords
Tip: Use sparingly to avoid overpowering other notes.
Alternatives & Comparisons
Natural alternative with similar creamy peach notes, but less intense.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions.
RIFM Assessment
RIFM assessment pending.
Sustainability
Synthetic production ensures consistent quality and reduces reliance on natural resources. Biodegradability studies are ongoing.
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References
- PubChem Compound Summary for Dihydro-4-methyl-5-pentylfuran-2(3H)-one PubChem
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID70865683
Physical Properties
| Molecular Weight | 170.252 g/mol🔬 EPA CompTox |
| Density | 0.941 g/cm^3📊 OPERA |
| Boiling Point | 251.145 °C📊 OPERA |
| Melting Point | -8.278 °C📊 OPERA |
| Flash Point | 105.872 °C📊 OPERA |
| Refractive Index | 1.438 Dimensionless📊 OPERA |
| Molar Volume | 183.34 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 2.941 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 2.941 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 2.941 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 5.73 Log10 unitless📊 OPERA |
| Water Solubility | 0.008 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.026 mmHg📊 OPERA |
| Viscosity | 2.902 cP📊 OPERA |
| Surface Tension | 28.176 dyn/cm📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 26.3 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 2 count💻 Computed |
| Rotatable Bonds | 4 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 48.116 cm^3/mol📊 OPERA |
| Polarizability | 19.075 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.
