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Systematic name 4-alpha,5-dimethyl-1,2,3,4,4alpha,5,6,7-
Other names (+)-nootkatone
Molecular formula C15H22O
Molar mass 218.55 g/mol
Appearance Viscous yellow in its liquid form
CAS number [4674-50-4]
Density and phase  ? g/cm³, ?
Solubility in water  ? g/100 ml (?°C)
Melting point 36°C (309 K)
Boiling point 170°C (443 K)
Acidity (pKa)  ?
Basicity (pKb)  ?
Chiral rotation [α]D  ?°
Viscosity  ? cP at ?°C
Molecular shape  ?
Crystal structure  ?
Dipole moment  ? D
MSDS External MSDS
Main hazards  ?
NFPA 704
Flash point ~ 100°C
R/S statement R: -
S: 23, 24, 25
RTECS number  ?
Supplementary data page
Structure and
n, εr, etc.
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Other anions  ?
Other cations  ?
Related Terpenes Valencene
Related compounds  ?
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Nootkatone is a natural organic compound and is the most important and expensive aromatic of grapefruit[1] . It is a sesquiterpene and a ketone.

Nootkatone is one of the main chemical components of the smell and flavour of grapefruits. In its solid form it is usually found as crystals. As a liquid, it is viscous and yellow. Nootkatone is typically extracted from grapefruit, but can also be manufactured with genetically modified organisms, or through the chemical or biochemical oxidation of valencene.


  1. ^ Furusawa, Mai; Toshihiro Hashimoto, Yoshiaki Noma, and Yoshinori Asakawa (November 2005). "Highly Efficient Production of Nootkatone, the Grapefruit Aroma from Valencene, by Biotransformation". Chem. Pharm. Bull. 53 (11): 1513-1514.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Nootkatone". A list of authors is available in Wikipedia.
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