<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2011-09-21 01:51:13 UTC</creation_date>
  <update_date>2015-07-21 06:59:39 UTC</update_date>
  <accession>FDB029174</accession>
  <name>4-Hydroxyretinal</name>
  <description>4-OH-Retinal is involved in the Vitamin A (retinol) metabolism pathway. In the reaction, retinal is oxidized at the c-4 position to form 4-OH-Retinal, a visual pigment chromophore. [HMDB]</description>
  <synonyms>
    <synonym>3,7-dimethyl-9-(5-hydroxy-2,6,6-trimethyl-1-cyclohexenyl)-all-trans-2,4,6,8-nonatetraen-1-ol</synonym>
    <synonym>4-OH-all-trans-retinal</synonym>
    <synonym>4-OH-Retinal</synonym>
    <synonym>4OHVA</synonym>
  </synonyms>
  <chemical_formula>C20H28O2</chemical_formula>
  <average_molecular_weight>300.4351</average_molecular_weight>
  <monisotopic_moleculate_weight>300.20893014</monisotopic_moleculate_weight>
  <iupac_name>(2E,4E,6E,8E)-9-(5-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenal</iupac_name>
  <traditional_iupac>(2E,4E,6E,8E)-9-(5-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenal</traditional_iupac>
  <cas_registry_number/>
  <smiles>C\C(\C=C\C=C(/C)\C=C\C1=C(C)CCC(O)C1(C)C)=C/C=O</smiles>
  <inchi>InChI=1S/C20H28O2/c1-15(7-6-8-16(2)13-14-21)9-11-18-17(3)10-12-19(22)20(18,4)5/h6-9,11,13-14,19,22H,10,12H2,1-5H3/b8-6+,11-9+,15-7+,16-13+</inchi>
  <inchikey>NCIHLRCJOBKKAL-ZBSJWCJSSA-N</inchikey>
  <taxonomy>
    <description> belongs to the class of organic compounds known as retinoids. These are oxygenated derivatives of 3,7-dimethyl-1-(2,6,6-trimethylcyclohex-1-enyl)nona-1,3,5,7-tetraene and derivatives thereof.</description>
    <direct_parent>Retinoids</direct_parent>
    <kingdom>Organic compounds</kingdom>
    <super_class>Lipids and lipid-like molecules</super_class>
    <class>Prenol lipids</class>
    <sub_class>Retinoids</sub_class>
    <molecular_framework>Aliphatic homomonocyclic compounds</molecular_framework>
    <alternative_parents>
      <alternative_parent>Aldehydes</alternative_parent>
      <alternative_parent>Diterpenoids</alternative_parent>
      <alternative_parent>Enals</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>Organic oxides</alternative_parent>
      <alternative_parent>Secondary alcohols</alternative_parent>
    </alternative_parents>
    <substituents>
      <substituent>Alcohol</substituent>
      <substituent>Aldehyde</substituent>
      <substituent>Aliphatic homomonocyclic compound</substituent>
      <substituent>Alpha,beta-unsaturated aldehyde</substituent>
      <substituent>Carbonyl group</substituent>
      <substituent>Diterpenoid</substituent>
      <substituent>Enal</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Organic oxide</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organooxygen compound</substituent>
      <substituent>Retinoid skeleton</substituent>
      <substituent>Secondary alcohol</substituent>
    </substituents>
    <external_descriptors>
    </external_descriptors>
  </taxonomy>
  <state>Solid</state>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>5.43</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-4.41</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>1.17e-02 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>3.62</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_acidic</kind>
    <value>19.49</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_basic</kind>
    <value>-0.83</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>(2E,4E,6E,8E)-9-(5-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenal</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>300.4351</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>300.20893014</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>C\C(\C=C\C=C(/C)\C=C\C1=C(C)CCC(O)C1(C)C)=C/C=O</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C20H28O2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C20H28O2/c1-15(7-6-8-16(2)13-14-21)9-11-18-17(3)10-12-19(22)20(18,4)5/h6-9,11,13-14,19,22H,10,12H2,1-5H3/b8-6+,11-9+,15-7+,16-13+</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>NCIHLRCJOBKKAL-ZBSJWCJSSA-N</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polar_surface_area</kind>
    <value>37.3</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>refractivity</kind>
    <value>98.38</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>36.36</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>5</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>acceptor_count</kind>
    <value>2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>donor_count</kind>
    <value>1</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>17822</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>39993</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>149940</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>305458</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>305459</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>305460</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>348877</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>348878</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>348879</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2772188</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2772189</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2772190</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2910455</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2910456</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2910457</spectrum_id>
    </spectrum>
  </spectra>
  <hmdb_id>HMDB12788</hmdb_id>
  <pubchem_compound_id/>
  <chemspider_id/>
  <kegg_id/>
  <chebi_id/>
  <biocyc_id/>
  <het_id/>
  <wikipidia/>
  <vmh_id/>
  <fbonto_id/>
  <foodb_id/>
  <general_references>
  </general_references>
  <foods>
  </foods>
  <flavors>
  </flavors>
  <enzymes>
  </enzymes>
  <health_effects>
  </health_effects>
</compound>
