<?xml version="1.0" encoding="UTF-8"?>
<metabolite>
  <version>1.0</version>
  <creation_date>2016-10-03 18:24:09 UTC</creation_date>
  <update_date>2020-06-04 19:19:09 UTC</update_date>
  <accession>BMDB0011760</accession>
  <secondary_accessions>
    <accession>BMDB11760</accession>
  </secondary_accessions>
  <name>Cer(d18:0/16:0)</name>
  <description>Cer(D18:0/16:0), also known as C16DH cer or DHC-a 18:0/16:0, belongs to the class of organic compounds known as long-chain ceramides. These are ceramides bearing a long chain fatty acid. Thus, cer(D18:0/16:0) is considered to be a ceramide lipid molecule. Cer(D18:0/16:0) is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral.</description>
  <synonyms>
    <synonym>N-[(2S)-1,3-Dihydroxyoctadecan-2-yl]hexadecanimidate</synonym>
    <synonym>Ceramide</synonym>
    <synonym>N-(Hexadecanoyl)-sphinganine</synonym>
    <synonym>Ceramide(D18:0/16:0)</synonym>
    <synonym>N-(Hexadecanoyl)-dihydrosphingosine</synonym>
    <synonym>N-(Hexadecanoyl)-D-erythro-sphinganine</synonym>
  </synonyms>
  <chemical_formula>C34H69NO3</chemical_formula>
  <average_molecular_weight>539.93</average_molecular_weight>
  <monisotopic_moleculate_weight>539.527745086</monisotopic_moleculate_weight>
  <iupac_name>N-[(2S)-1,3-dihydroxyoctadecan-2-yl]hexadecanamide</iupac_name>
  <traditional_iupac>N-[(2S)-1,3-dihydroxyoctadecan-2-yl]hexadecanamide</traditional_iupac>
  <cas_registry_number/>
  <smiles>CCCCCCCCCCCCCCCC(O)[C@H](CO)NC(=O)CCCCCCCCCCCCCCC</smiles>
  <inchi>InChI=1S/C34H69NO3/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-33(37)32(31-36)35-34(38)30-28-26-24-22-20-18-16-14-12-10-8-6-4-2/h32-33,36-37H,3-31H2,1-2H3,(H,35,38)/t32-,33?/m0/s1</inchi>
  <inchikey>GCGTXOVNNFGTPQ-JEFWXSHNSA-N</inchikey>
  <taxonomy>
    <description> belongs to the class of organic compounds known as long-chain ceramides. These are ceramides bearing a long chain fatty acid.</description>
    <kingdom>Organic compounds</kingdom>
    <super_class>Lipids and lipid-like molecules</super_class>
    <class>Sphingolipids</class>
    <sub_class>Ceramides</sub_class>
    <direct_parent>Long-chain ceramides</direct_parent>
    <alternative_parents>
      <alternative_parent>Carbonyl compounds</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>N-acyl amines</alternative_parent>
      <alternative_parent>Organic oxides</alternative_parent>
      <alternative_parent>Organonitrogen compounds</alternative_parent>
      <alternative_parent>Organopnictogen compounds</alternative_parent>
      <alternative_parent>Primary alcohols</alternative_parent>
      <alternative_parent>Secondary alcohols</alternative_parent>
      <alternative_parent>Secondary carboxylic acid amides</alternative_parent>
    </alternative_parents>
    <substituents>
      <substituent>Alcohol</substituent>
      <substituent>Aliphatic acyclic compound</substituent>
      <substituent>Carbonyl group</substituent>
      <substituent>Carboxamide group</substituent>
      <substituent>Carboxylic acid derivative</substituent>
      <substituent>Fatty acyl</substituent>
      <substituent>Fatty amide</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Long-chain ceramide</substituent>
      <substituent>N-acyl-amine</substituent>
      <substituent>Organic nitrogen compound</substituent>
      <substituent>Organic oxide</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organonitrogen compound</substituent>
      <substituent>Organooxygen compound</substituent>
      <substituent>Organopnictogen compound</substituent>
      <substituent>Primary alcohol</substituent>
      <substituent>Secondary alcohol</substituent>
      <substituent>Secondary carboxylic acid amide</substituent>
    </substituents>
    <molecular_framework>Aliphatic acyclic compounds</molecular_framework>
    <external_descriptors>
    </external_descriptors>
  </taxonomy>
  <experimental_properties>
    <state>Solid</state>
  </experimental_properties>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>9.44</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-7.11</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logp</kind>
      <value>11.07</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_acidic</kind>
      <value>13.83</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_basic</kind>
      <value>-1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>iupac</kind>
      <value>N-[(2S)-1,3-dihydroxyoctadecan-2-yl]hexadecanamide</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>average_mass</kind>
      <value>539.93</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>539.527745086</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>CCCCCCCCCCCCCCCC(O)[C@H](CO)NC(=O)CCCCCCCCCCCCCCC</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>C34H69NO3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/C34H69NO3/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-33(37)32(31-36)35-34(38)30-28-26-24-22-20-18-16-14-12-10-8-6-4-2/h32-33,36-37H,3-31H2,1-2H3,(H,35,38)/t32-,33?/m0/s1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>GCGTXOVNNFGTPQ-JEFWXSHNSA-N</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polar_surface_area</kind>
      <value>69.56</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>refractivity</kind>
      <value>164.81</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polarizability</kind>
      <value>73.5</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rotatable_bond_count</kind>
      <value>31</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>acceptor_count</kind>
      <value>3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>donor_count</kind>
      <value>3</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>
    <property>
      <kind>number_of_rings</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>bioavailability</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rule_of_five</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>ghose_filter</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>veber_rule</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mddr_like_rule</kind>
      <value>Yes</value>
      <source>ChemAxon</source>
    </property>
  </predicted_properties>
  <pathways>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1246285</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1246286</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1246287</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1361632</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1361633</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1361634</spectrum_id>
    </spectrum>
  </spectra>
  <normal_concentrations>
    <concentration>
      <biospecimen>Milk</biospecimen>
      <concentration_value>0.125 +/- 0.001</concentration_value>
      <concentration_units>uM</concentration_units>
      <comment>Commercial 2% milk by LC-HRMS</comment>
      <references>
        <reference>
          <reference_text>Foroutan A, Guo AC, Vazquez-Fresno R, Lipfert M, Zhang L, Zheng J, Badran H, Budinski Z, Mandal R, Ametaj BN, Wishart DS: Chemical Composition of Commercial Cow's Milk. J Agric Food Chem. 2019 Apr 17. doi: 10.1021/acs.jafc.9b00204.</reference_text>
          <pubmed_id>30994344</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Milk</biospecimen>
      <concentration_value>0.155 +/- 0.003</concentration_value>
      <concentration_units>uM</concentration_units>
      <comment>Commercial 3.25% milk by LC-HRMS</comment>
      <references>
        <reference>
          <reference_text>Foroutan A, Guo AC, Vazquez-Fresno R, Lipfert M, Zhang L, Zheng J, Badran H, Budinski Z, Mandal R, Ametaj BN, Wishart DS: Chemical Composition of Commercial Cow's Milk. J Agric Food Chem. 2019 Apr 17. doi: 10.1021/acs.jafc.9b00204.</reference_text>
          <pubmed_id>30994344</pubmed_id>
        </reference>
      </references>
    </concentration>
    <concentration>
      <biospecimen>Placenta</biospecimen>
      <concentration_value/>
      <concentration_units/>
      <references>
        <reference>
          <reference_text>Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089.</reference_text>
          <pubmed_id>29140435</pubmed_id>
        </reference>
      </references>
    </concentration>
  </normal_concentrations>
  <foodb_id/>
  <chemspider_id/>
  <pubchem_compound_id/>
  <kegg_id/>
  <chebi_id/>
  <drugbank_id/>
  <phenol_explorer_compound_id/>
  <meta_cyc_id/>
  <wikipedia_id/>
  <knapsack_id/>
  <bigg_id/>
  <metlin_id/>
  <pdbe_id/>
  <synthesis_reference/>
  <general_references>
    <reference>
      <reference_text>A. Foroutan et al. The Chemical Composition of Commercial Cow's Milk (in preparation)</reference_text>
    </reference>
  </general_references>
  <protein_associations>
  </protein_associations>
</metabolite>
