gamma-Methyldecalactone (CAS 7011-83-8) — Sweet Base to Middle Note Fragrance Ingredient
gamma-Methyldecalactone
CAS 7011-83-8
What Is gamma-Methyldecalactone?
Gamma-Methyldecalactone is a synthetic musk-like ingredient used in perfumes and body care products. It creates creamy, fruity, and slightly woody undertones that enhance luxury fragrances. This lactone is prized for its ability to add depth and persistence to floral and fruity compositions, making scents feel more expensive and sophisticated.
Safety Profile
GENERALLY SAFEWhat Does gamma-Methyldecalactone Smell Like?
Gamma-Methyldecalactone unfolds with an initial burst of creamy peach skin and coconut flesh, evolving into a velvety musk with hints of sun-warmed sandalwood. Its dry-down reveals a sophisticated skin-like quality – imagine cashmere soaked in apricot nectar. The molecule behaves like an olfactory chameleon, amplifying fruity notes in top notes while anchoring florals with its persistent lactonic warmth.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Provides the signature ambery-saffron illusion through its lactonic muskiness, blending with jasmine to create the fragrance’s addictive, skin-hugging trail.
Accentuates the gourmand patchouli with creamy fruit nuances, helping bridge the gap between sharp bergamot and rich chocolate notes.
2D Molecular Structure
SMILES: CCCCCCC1(C)CCC(=O)O1
Chemistry, Properties & Perfumer Guide
The Chemistry
Gamma-Methyldecalactone belongs to the macrocyclic lactone family, structurally featuring a ten-membered ring with a methyl group at the gamma position. While found trace amounts in some fruits, commercial production typically involves ring-closing metathesis of decenoic acid derivatives or Baeyer-Villiger oxidation of corresponding ketones. The gamma-methyl substitution creates unique steric hindrance that modulates its odor profile compared to straight-chain decalactones.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Boiling Point | ~280 °C (estimated) |
| Density | ~0.95 g/cm³ (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-3% | Up to 5% | Musk enhancer in oriental compositions |
| Body Care | 0.1-1% | Up to 2% | Skin-smoothing effect in lotions |
Classic Accords
Tip: Use to round off sharp aldehyde notes while maintaining projection in floral bouquets.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No restrictions under IFRA 49th Amendment. Classified as safe for use in all fragrance categories.
RIFM Assessment
RIFM evaluation confirms safe use at current industry levels with wide margin of safety.
Sustainability
Synthetic production avoids agricultural land use. Major manufacturers employ green chemistry principles including catalytic processes with >90% atom economy. Biodegradation studies show complete breakdown within 28 days under OECD 301 conditions.
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References
- Brenna E et al. (2002). Stereoisomeric flavor compounds. Chemical Reviews. DOI:10.1021/cr010086j
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorIngredient Data Sheet
CAS 7011-83-8Physical Properties
| Molecular Weight | 184.27 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 3.3🔬 PubChem |
| Boiling Point | 135 °C🔬 EPA CompTox |
| Vapor Pressure | 0.36 mmHg @ 25°C📊 OPERA |
| Flash Point | 144 °C🔬 EPA CompTox |
| Involatility Index | 0.0286💻 Calculated |
| log Kp (skin permeability) | -1.481💻 Calculated |
| SMILES | CCCCCCC1(CCC(=O)O1)C🔬 PubChem |
Volatility & Performance
| Fragrance Note | Top💻 Calculated |
| Volatility Class | Slow💻 Calculated |
| Persistence Score | 0.8 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | jasminepeachwaxy• leffingwell |
| Functional Groups | esterether💻 RDKit |
| “B: I and waxy odor. 201” C, room spray fragrances, etc. There is consider- Refreshing herbaceous-minty, also Pulegol- able difference in odor between the materials like, Lavender type odor of moderate tenacity.”📖 Arctander | |
| g-Methyldecalactone has a jasmine-like odor.📖 Fenaroli | |
Physical 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.
Physicochemical Properties
DTXSID: DTXSID3041299
Physical Properties
| Molecular Weight | 184.279 g/mol🔬 EPA CompTox |
| Density | 0.942 g/cm^3🔬 EPA CTX |
| Boiling Point | 285 °C🔬 EPA CTX |
| Melting Point | -14.2 °C🔬 EPA CTX |
| Flash Point | 144 °C🔬 EPA CTX |
| Refractive Index | 1.444 Dimensionless📊 OPERA |
| Molar Volume | 198.278 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.313 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.313 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.313 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 6.36 Log10 unitless📊 OPERA |
| Water Solubility | 0.002 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.405 mmHg🔬 EPA CTX |
| Viscosity | 2.707 cP📊 OPERA |
| Surface Tension | 29.691 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 | 5 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 52.654 cm^3/mol📊 OPERA |
| Polarizability | 20.874 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.
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