Whiskey lactone
Synonym(s):(±)-5-Butyl-4-methyldihydro-2(3H)-furanone
- CAS NO.:39212-23-2
- Empirical Formula: C9H16O2
- Molecular Weight: 156.22
- MDL number: MFCD00209540
- EINECS: 254-357-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-20 17:10:30
What is Whiskey lactone?
Description
All four stereoisomers of whiskey lactone, or β-methyl-γ-octalactone, are found in nature—specifically, in oak wood used to make barrels for aging whiskeys, wines, and brandies. The (+)-trans?isomer is shown. Recently, whiskey lactone was?identified as the source of coconut-like odors?in grape-based brandies such as Cognac and Armagnac.
Chemical properties
Whiskey Lactone is found
as its cis- and trans-isomers in whiskey and in oakwood volatiles; the cis-isomer
is the more important in sensory terms. It is a clear, almost colorless liquid with
an intense, warm, sweet, coumarin-like odor.
A cis–trans mixture can be prepared by radical addition reaction of pentanal
with crotonic acid followed by reductive cyclization of the resulting ??-oxo acid
with sodium boron hydride/sulfuric acid . It is used in aroma compositions,
for example, for beverages.
Occurrence
Reported present in cognac, rum, Irish malt, bourbon whiskey, scotch, sherry, port and wine.
Definition
ChEBI: Quercuslactone a is a gamma-lactone.
Aroma threshold values
80% of a taste panel found whiskey lactone intolerable at 160 ppm
Taste threshold values
Taste characteristics at 0.5 ppm: woody, coumarinic, coconut, lactonic, creamy and nutty with a toasted nuance.
Synthesis Reference(s)
Tetrahedron Letters, 26, p. 6225, 1985 DOI: 10.1016/S0040-4039(00)95058-5
Trade name
Methyl octalactoneTM (PFW)
Properties of Whiskey lactone
Boiling point: | 93-94 °C5 mm Hg(lit.) |
Density | 0.952 g/mL at 25 °C(lit.) |
refractive index | n |
FEMA | 3803 | 4-HYDROXY-3-METHYLOCTANOIC ACID LACTONE |
Flash point: | >230 °F |
form | clear liquid |
color | Colorless to Almost colorless |
Odor | at 10.00 % in dipropylene glycol. tonka coumarin coconut toasted nutty celery burnt |
JECFA Number | 437 |
CAS DataBase Reference | 39212-23-2(CAS DataBase Reference) |
NIST Chemistry Reference | 2(3H)-furanone, 5-butyldihydro-4-methyl-(39212-23-2) |
EPA Substance Registry System | 2(3H)-Furanone, 5-butyldihydro-4-methyl- (39212-23-2) |
Safety information for Whiskey lactone
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Whiskey lactone
New Products
4-AMINO-TETRAHYDRO-PYRAN-4-CARBOXYLIC ACID HCL 4-(Dimethylamino)tetrahydro-2H-pyran-4-carbonitrile 4-Aminotetrahydropyran-4-carbonitrile Hydrochloride (R)-3-Aminobutanenitrile Hydrochloride 3-((Dimethylamino)methyl)-5-methylhexan-2-one oxalate 1,4-Dioxa-8-azaspiro[4.5]decane 5-Bromo-2-nitropyridine Nimesulide BP Aceclofenac IP/BP/EP Diclofenac Sodium IP/BP/EP/USP Mefenamic Acid IP/BP/EP/USP Ornidazole IP Diclofenac Potassium THOMAIND PAPER PH 2.0 TO 4.5 1 BOX BUFFER CAPSULE PH 9.2 - 10 CAP SODIUM CHLORIDE 0.1N CVS ALLOXAN MONOHYDRATE 98% PLATINUM 0.5% ON 3 MM ALUMINA PELLETS (TYPE 73) LITHIUM AAS SOLUTION 2-Bromo-1-(bromomethyl)-3-chloro-5-nitrobenzene 2-Bromo-3-nitroaniline N-(3-Hydroxypropyl)-N-methylacetamide 3-Bromo-6-chloropyridazine 4-ethyl-3-nitrobenzoic acidRelated products of tetrahydrofuran
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