(+/-) 3-Methyl-gamma-decalactone (CAS 67663-01-08) — Sweet Middle Note Fragrance Ingredient
(+/-) 3-Methyl-gamma-decalactone
CAS 67663-01-08
What Is (+/-) 3-Methyl-gamma-decalactone?
3-Methyl-gamma-decalactone is a synthetic lactone with a creamy, coconut-like aroma. It’s used in fragrances to add sweet, milky nuances and is found in body lotions, candles, and tropical-themed perfumes. This ingredient matters because it mimics natural coconut scents without sourcing challenges, offering consistent quality and sustainability benefits over natural extracts.
Safety Profile
GENERALLY SAFEWhat Does (+/-) 3-Methyl-gamma-decalactone Smell Like?
3-Methyl-gamma-decalactone opens with a rich, creamy coconut note, reminiscent of sun-warmed tropical beaches. As it evolves, it reveals subtle milky undertones and a soft, woody backbone. The dry-down is smooth and slightly sweet, like the lingering scent of coconut oil on skin. Its behavior is linear yet nuanced, making it a versatile lactone for tropical and gourmand compositions.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the tropical coconut accord, adding a creamy depth that balances the citrus and rum notes.
Provides a smooth, milky coconut facet that complements the white flowers and amber, creating a luxurious sun-kissed effect.
Chemistry, Properties & Perfumer Guide
The Chemistry
3-Methyl-gamma-decalactone is a synthetic lactone, part of the gamma-lactone family known for their creamy, coconut-like aromas. It is typically synthesized via esterification or lactonization of hydroxy acids. The methyl substitution at the 3-position enhances its sweetness and tenacity compared to simpler lactones.
Physical & Chemical Properties
| Boiling Point | Not specified |
|---|---|
| Density | Not specified |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Adds creamy coconut nuances |
| Body Care | 0.5-3% | Up to 5% | Enhances tropical formulations |
Classic Accords
Tip: Use sparingly to avoid overpowering other notes in the composition.
Alternatives & Comparisons
A simpler lactone with similar coconut notes but less sweetness and tenacity.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions apply.
EU Allergen Declaration
Not listed as an EU allergen.
RIFM Assessment
RIFM assessment confirms safety at typical usage levels.
Sustainability
Synthetic production avoids the environmental impact of coconut farming. Consistent quality and supply make it a sustainable choice for perfumers.
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References
- PubChem Compound Summary for 3-Methyl-gamma-decalactone PubChem
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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