Isojasmone (CAS 11050-62-7) — Floral Heart Note Fragrance Ingredient
Isojasmone
CAS 11050-62-7
What Is Isojasmone?
Isojasmone is a synthetic fragrance compound that mimics the sweet, floral scent of jasmine. It’s commonly found in perfumes, body care products, and scented household items. This ingredient helps create sophisticated floral bouquets without the high cost of natural jasmine extracts.
Safety Profile
GENERALLY SAFEWhat Does Isojasmone Smell Like?
Isojasmone unfolds like a jasmine blossom at dusk – initial honeyed sweetness gives way to a delicate floral heart with subtle green undertones. Its character is more diffusive and less indolic than true jasmine, with a clean, slightly fruity nuance reminiscent of pear skins. The dry-down reveals a soft, musky-woody facet that lingers close to the skin. This versatile molecule bridges the gap between fresh top notes and rich base accords.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the jasmine-aldehyde bouquet, adding diffusion without overpowering the delicate balance.
Provides a modern jasmine facet that complements the ylang-ylang and damascenone in this golden floral.
2D Molecular Structure
SMILES: CCC=CCC1=C(C)C(=O)CC1
Chemistry, Properties & Perfumer Guide
The Chemistry
Isojasmone is a cyclic ketone with structural similarities to naturally occurring jasmine lactones. The synthetic version typically exists as a racemic mixture, though enantiomeric forms may show subtle odor differences. Industrial production often involves cyclization of appropriate unsaturated precursors, with careful control of double bond geometry to achieve the desired olfactory profile.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Boiling Point | Approx. 250°C (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Floral core modifier |
| Body Care | 0.1-0.5% | Up to 1% | Adds floral sophistication |
Classic Accords
Tip: Use to brighten heavy floral bases without adding excessive sweetness.
Alternatives & Comparisons
More tenacious with greener facets, suitable for longer-lasting floral effects.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No restrictions under current IFRA standards.
RIFM Assessment
Considered safe for use in fragrances based on structural analogy to approved jasmine compounds.
Sustainability
As a synthetic material, isojasmone reduces pressure on natural jasmine crops while offering consistent quality. Production typically uses petrochemical precursors, though some manufacturers are exploring bio-based routes.
Explore Isojasmone
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References
- Bauer et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID6051568
Physical Properties
| Molecular Weight | 164.248 g/mol🔬 EPA CompTox |
| Density | 0.939 g/cm^3📊 OPERA |
| Boiling Point | 250.888 °C📊 OPERA |
| Melting Point | 30.219 °C📊 OPERA |
| Flash Point | 100.489 °C📊 OPERA |
| Refractive Index | 1.491 Dimensionless📊 OPERA |
| Molar Volume | 175.191 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 2.786 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 2.786 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 2.786 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 5.72 Log10 unitless📊 OPERA |
| Water Solubility | 0.004 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.046 mmHg📊 OPERA |
| Surface Tension | 32.183 dyn/cm📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 17.07 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 3 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 50.776 cm^3/mol📊 OPERA |
| Polarizability | 20.129 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.
