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gamma-Decalactone

5-hexyloxolan-2-one

4-Decanolide

Lactone (gamma) · gamma-Lactone · C₁₀H₁₈O₂

Chemical structure of gamma-Decalactone
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
706-14-9
Molecular formula
C₁₀H₁₈O₂
Molecular weight
170.25 g/mol
Origin
Nature-identical
Odor family
Fruity
Note
Heart
Aroma
Peach and apricot, fatty and sweet, close to canned peach.

History

gamma-decalactone is a key odorant of peach. Commercial "natural" grades are often made by fermentation, in which the yeast Yarrowia lipolytica converts ricinoleic acid from castor oil.

In perfumery

Used for peach and apricot notes and to round white florals.

Connections

EvokesPeach
Found in naturePeach, Apricot

Regulatory status

No specific limit
IFRA 51
No dedicated IFRA Standard in the IFRA library as of Amendment 51.
EU CosReg
No specific entry in Annex II or III of Regulation (EC) 1223/2009.
EU allergen 2023/1545
Not on the list of fragrance allergens requiring labelling, including after Regulation (EU) 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 706-14-9
  2. IFRA Standards Library, Amendments up to 51
  3. Regulation (EC) No 1223/2009, consolidated text of 18.05.2026, Annexes II and III