Record Information
Version1.0
Creation date2010-04-08 22:11:18 UTC
Update date2018-01-25 19:41:44 UTC
Primary IDFDB014484
Secondary Accession NumbersNot Available
Chemical Information
FooDB Namealpha-Ionone
DescriptionAlpha-ionone, also known as (E)-α-ionone or alpha-cyclocitrylideneacetone, is a member of the class of compounds known as sesquiterpenoids. Sesquiterpenoids are terpenes with three consecutive isoprene units. Alpha-ionone is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Alpha-ionone is a sweet, floral, and fruity tasting compound and can be found in a number of food items such as tea, wild carrot, wild celery, and ginkgo nuts, which makes alpha-ionone a potential biomarker for the consumption of these food products. Alpha-ionone can be found primarily in saliva. Alpha-ionone exists in all eukaryotes, ranging from yeast to humans. Alpha-ionone is a non-carcinogenic (not listed by IARC) potentially toxic compound.
CAS Number127-41-3
Structure
Thumb
Synonyms
SynonymSource
(e)-alpha-IononeChEBI
alpha-(e)-IononeChEBI
alpha-CyclocitrylideneacetoneChEBI
alpha-IononChEBI
trans-alpha-IononeChEBI
(e)-a-IononeGenerator
(e)-α-iononeGenerator
a-(e)-IononeGenerator
α-(e)-iononeGenerator
a-CyclocitrylideneacetoneGenerator
α-cyclocitrylideneacetoneGenerator
a-IononGenerator
α-iononGenerator
trans-a-IononeGenerator
trans-α-iononeGenerator
(3E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-ONHMDB
(±)-alpha-Iononemanual
(±)-trans-alpha-Iononemanual
(3E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-onemanual
(5E)-Iononemanual
(E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-onemanual
(E)-alpha-Iononemanual
α-iononebiospider
3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (3E)-manual
a-Iononedb_source
Alpha-iononebiospider
FEMA 2594db_source
Ionone, alpha-biospider
Predicted Properties
PropertyValueSource
Water Solubility0.05 g/LALOGPS
logP4.14ALOGPS
logP3.32ChemAxon
logS-3.6ALOGPS
pKa (Strongest Acidic)19.83ChemAxon
pKa (Strongest Basic)-4.9ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area17.07 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity62.09 m³·mol⁻¹ChemAxon
Polarizability23.08 ųChemAxon
Number of Rings1ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Chemical FormulaC13H20O
IUPAC name(3E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one
InChI IdentifierInChI=1S/C13H20O/c1-10-6-5-9-13(3,4)12(10)8-7-11(2)14/h6-8,12H,5,9H2,1-4H3/b8-7+
InChI KeyUZFLPKAIBPNNCA-BQYQJAHWSA-N
Isomeric SMILESCC(=O)\C=C\C1C(C)=CCCC1(C)C
Average Molecular Weight192.2973
Monoisotopic Molecular Weight192.151415262
Classification
DescriptionThis compound belongs to the class of organic compounds known as sesquiterpenoids. These are terpenes with three consecutive isoprene units.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassPrenol lipids
Sub ClassSesquiterpenoids
Direct ParentSesquiterpenoids
Alternative Parents
Substituents
  • Cyclofarsesane sesquiterpenoid
  • Megastigmane sesquiterpenoid
  • Sesquiterpenoid
  • Ionone derivative
  • Alpha,beta-unsaturated ketone
  • Enone
  • Acryloyl-group
  • Ketone
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aliphatic homomonocyclic compound
Molecular FrameworkAliphatic homomonocyclic compounds
External Descriptors
Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
PropertyValueReference
Physical stateNot Available
Physical DescriptionNot Available
Mass CompositionC 81.20%; H 10.48%; O 8.32%DFC
Melting Point< 25 oC
Boiling PointNot Available
Experimental Water Solubility0.106 mg/mL at 25 oCETZWEILER,F et al. (1995)
Experimental logP3.85GRIFFIN,S ET AL. (1999)
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDC12286
Pubchem Compound ID5282108
Pubchem Substance IDNot Available
ChEBI ID32319
Phenol-Explorer IDNot Available
DrugBank IDNot Available
HMDB IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDJRF23-P:JRF23-P
EAFUS ID1805
Dr. Duke IDALPHA-IONONE
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Flavornet ID127-41-3
GoodScent IDrw1011951
SuperScent ID5282108
Wikipedia IDIonone
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
FoodReference
Biological Effects and Interactions
Health Effects / Bioactivities
DescriptorIDDefinitionReference
allergenic50904 A chemical compound which causes the onset of an allergic reaction by interacting with any of the molecular pathways involved in an allergy.DUKE
cytochrome-P450-1A inducerDUKE
cytochrome-P450-2B inducerDUKE
perfume48318 A substance, extract, or preparation for diffusing or imparting an agreeable or attractive smell.DUKE
tremorigenicDUKE
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
Flavours
FlavorCitations
wood
  1. Arn, H, Acree TE. “Flavornet: A database of aroma compounds based on odor potency in natural products”. Developments in Food Science 40 (1998): 27. doi:10.1016/S0167-4501(98)80029-0
violet
  1. Arn, H, Acree TE. “Flavornet: A database of aroma compounds based on odor potency in natural products”. Developments in Food Science 40 (1998): 27. doi:10.1016/S0167-4501(98)80029-0
  2. Dunkel, M. et al. SuperScent – a database of flavors and scents. Nucleic Acids Research 2008, doi:10.1093/nar/gkn695
  3. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
raspberry
  1. Dunkel, M. et al. SuperScent – a database of flavors and scents. Nucleic Acids Research 2008, doi:10.1093/nar/gkn695
sweet
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
woody
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
floral
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
orris
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
tropical
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
fruity
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
Files
MSDSNot Available
References
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).