<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2010-04-08 22:11:13 UTC</creation_date>
  <update_date>2025-11-19 00:45:38 UTC</update_date>
  <accession>FDB014339</accession>
  <name>alpha-Irone</name>
  <description>Flavouring ingredient</description>
  <synonyms>
    <synonym>&amp;alpha;-Ionone, 6-methyl-</synonym>
    <synonym>&amp;alpha;-irone</synonym>
    <synonym>&amp;alpha;-methyl-ionone</synonym>
    <synonym>2,6-cis-(2(1),2(2))-alpha-Ionone, cis-</synonym>
    <synonym>3-Buten-2-one, 4-(2,5,6,6-tetramethyl-2-cyclohexen-1-yl)-</synonym>
    <synonym>4-(2,5,6,6-Tetramethyl-2-cyclo-hexen-1-yl)-3-buten-2-one</synonym>
    <synonym>4-(2,5,6,6-Tetramethyl-2-cyclohexen-1-yl)-3-buten-2-one</synonym>
    <synonym>4-(2,5,6,6-Tetramethyl-2-cyclohexen-1-yl)-3-buten-2-one, 9CI</synonym>
    <synonym>4-(2,5,6,6-Tetramethylcyclohex-2-enyl)but-3-en-2-one</synonym>
    <synonym>6-Methyl ionone</synonym>
    <synonym>6-Methyl-&amp;alpha;-ionone</synonym>
    <synonym>6-Methyl-alpha -ionone</synonym>
    <synonym>6-Methyl-alpha-ionone</synonym>
    <synonym>alpha -Irone</synonym>
    <synonym>alpha -Methyl-ionone</synonym>
    <synonym>alpha 6-Methyl--ionone</synonym>
    <synonym>alpha-Cyclocitrylidenebutanone</synonym>
    <synonym>alpha-Cyclocitrylidenemethyl ethyl ketone</synonym>
    <synonym>Alpha-inone, methyl-</synonym>
    <synonym>alpha-Inone, methyl- (6CI)</synonym>
    <synonym>Alpha-ionone, methyl-</synonym>
    <synonym>Alpha-iron</synonym>
    <synonym>Alpha-irone</synonym>
    <synonym>cis-2,6-cis-(2(1),2(2))-alpha-Ionone</synonym>
    <synonym>Cyclocitrylidenebutanone, alpha-</synonym>
    <synonym>Cyclocitrylidenemethyl ethyl ketone, alpha-</synonym>
    <synonym>FEMA 2597</synonym>
    <synonym>Ionone 6-Methyl, &amp;alpha;</synonym>
    <synonym>Ionone 6-methyl, alpha</synonym>
    <synonym>Irone</synonym>
    <synonym>Irone, alpha-</synonym>
    <synonym>Methyl alpha-ionone</synonym>
    <synonym>Methyl-&amp;alpha;-ionone</synonym>
    <synonym>Methyl-alpha -ionone</synonym>
    <synonym>Methyl-alpha-inone</synonym>
    <synonym>Methyl-alpha-ionone</synonym>
  </synonyms>
  <chemical_formula>C14H22O</chemical_formula>
  <average_molecular_weight>206.3239</average_molecular_weight>
  <monisotopic_moleculate_weight>206.167065326</monisotopic_moleculate_weight>
  <iupac_name>(3E)-4-(2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one</iupac_name>
  <traditional_iupac>α-iron</traditional_iupac>
  <cas_registry_number>79-69-6</cas_registry_number>
  <smiles>CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C</smiles>
  <inchi>InChI=1S/C14H22O/c1-10-6-7-11(2)14(4,5)13(10)9-8-12(3)15/h6,8-9,11,13H,7H2,1-5H3/b9-8+</inchi>
  <inchikey>JZQOJFLIJNRDHK-CMDGGOBGSA-N</inchikey>
  <taxonomy>
    <description> belongs to the class of organic compounds known as sesquiterpenoids. These are terpenes with three consecutive isoprene units.</description>
    <direct_parent>Sesquiterpenoids</direct_parent>
    <kingdom>Organic compounds</kingdom>
    <super_class>Lipids and lipid-like molecules</super_class>
    <class>Prenol lipids</class>
    <sub_class>Sesquiterpenoids</sub_class>
    <molecular_framework>Aliphatic homomonocyclic compounds</molecular_framework>
    <alternative_parents>
      <alternative_parent>Acryloyl compounds</alternative_parent>
      <alternative_parent>Enones</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>Ketones</alternative_parent>
      <alternative_parent>Organic oxides</alternative_parent>
    </alternative_parents>
    <substituents>
      <substituent>Acryloyl-group</substituent>
      <substituent>Aliphatic homomonocyclic compound</substituent>
      <substituent>Alpha,beta-unsaturated ketone</substituent>
      <substituent>Carbonyl group</substituent>
      <substituent>Cyclofarsesane sesquiterpenoid</substituent>
      <substituent>Enone</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Ionone derivative</substituent>
      <substituent>Ketone</substituent>
      <substituent>Megastigmane sesquiterpenoid</substituent>
      <substituent>Organic oxide</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organooxygen compound</substituent>
      <substituent>Sesquiterpenoid</substituent>
    </substituents>
    <external_descriptors>
      <external_descriptor>enone</external_descriptor>
      <external_descriptor>methyl ketone</external_descriptor>
    </external_descriptors>
  </taxonomy>
  <state/>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>4.37</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-3.94</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>2.36e-02 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
    <property>
      <kind>melting_point</kind>
      <value>&lt; 25 oC</value>
    </property>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>3.61</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_acidic</kind>
    <value>19.83</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_basic</kind>
    <value>-4.9</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>(3E)-4-(2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>206.3239</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>206.167065326</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C14H22O</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C14H22O/c1-10-6-7-11(2)14(4,5)13(10)9-8-12(3)15/h6,8-9,11,13H,7H2,1-5H3/b9-8+</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>JZQOJFLIJNRDHK-CMDGGOBGSA-N</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polar_surface_area</kind>
    <value>17.07</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>refractivity</kind>
    <value>66.64</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>25.22</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>acceptor_count</kind>
    <value>1</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>donor_count</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>physiological_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formal_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <pathways>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>13313</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>146617</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>107928</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>107929</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>107930</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>175029</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>175030</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>175031</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2738743</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2738744</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2738745</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2969672</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2969673</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2969674</spectrum_id>
    </spectrum>
  </spectra>
  <hmdb_id>HMDB35631</hmdb_id>
  <pubchem_compound_id/>
  <chemspider_id/>
  <kegg_id/>
  <chebi_id>10284</chebi_id>
  <biocyc_id/>
  <het_id/>
  <wikipidia/>
  <vmh_id/>
  <fbonto_id/>
  <foodb_id/>
  <general_references>
    <reference>#&lt;Reference:0x000055ce3211fb60&gt;</reference>
  </general_references>
  <foods>
  </foods>
  <flavors>
    <flavor>
      <name>berry</name>
    </flavor>
    <flavor>
      <name>floral</name>
    </flavor>
    <flavor>
      <name>orris</name>
    </flavor>
    <flavor>
      <name>powdery</name>
    </flavor>
    <flavor>
      <name>violet</name>
    </flavor>
    <flavor>
      <name>woody</name>
    </flavor>
  </flavors>
  <enzymes>
  </enzymes>
  <health_effects>
  </health_effects>
</compound>
