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Cyclohexadecanone

Cyclohexadecan-1-one

Cyclohexadecanone

Macrocyclic ketone · C₁₆H₃₀O

Chemical structure of Cyclohexadecanone
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
2550-52-9
Molecular formula
C₁₆H₃₀O
Molecular weight
238.41 g/mol
Origin
Synthetic
Odor family
Musk
Note
Base
Aroma
Dry, warm musk, somewhat waxy and powdery.

History

Cyclohexadecanone is the saturated 16-membered ring ketone, one CH2 larger than cyclopentadecanone (Exaltone). It belongs to the large ring ketone series studied after Ružička's work on large rings and musk odor.

In perfumery

It is used as a musk base in fragrance and cosmetics, within IFRA limits.

Regulatory status

IFRA restricted
IFRA 51
Restriction: IFRA Standard for cyclohexadecanone, published 2023.
EU allergen 2023/1545
Not named individually in the expanded allergen list of Regulation 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 2550-52-9 (formula, names)
  2. IFRA Standards, 51st Amendment: Index of IFRA Standards (notified 30 June 2023)
  3. Nobel Prize in Chemistry 1939, Leopold Ružička (work on polymethylenes and higher terpenes)
  4. The Good Scents Company Information System, material entries