<?xml version="1.0" encoding="UTF-8"?>
<metabolite>
  <version>1.0</version>
  <creation_date>2016-09-30 23:49:25 UTC</creation_date>
  <update_date>2020-06-04 19:51:05 UTC</update_date>
  <accession>BMDB0008034</accession>
  <secondary_accessions>
    <accession>BMDB08034</accession>
  </secondary_accessions>
  <name>PC(18:0/16:0)</name>
  <description>PC(18:0/16:0), also known as PC(34:0) or lecithin, belongs to the class of organic compounds known as phosphatidylcholines. These are glycerophosphocholines in which the two free -OH are attached to one fatty acid each through an ester linkage. Thus, PC(18:0/16:0) is considered to be a glycerophosphocholine lipid molecule. PC(18:0/16:0) is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral.</description>
  <synonyms>
    <synonym>(2R)-2-(Palmitoyloxy)-3-(stearoyloxy)propyl 2-(trimethylazaniumyl)ethyl phosphate</synonym>
    <synonym>1-C18:0-2-C16:0-Phosphatidylcholine</synonym>
    <synonym>1-Octadecanoyl-2-hexadecanoyl-sn-glycero-3-phosphocholine</synonym>
    <synonym>PC(34:0)</synonym>
    <synonym>Phosphatidylcholine(18:0/16:0)</synonym>
    <synonym>Phosphatidylcholine(34:0)</synonym>
    <synonym>(2R)-2-(Palmitoyloxy)-3-(stearoyloxy)propyl 2-(trimethylazaniumyl)ethyl phosphoric acid</synonym>
    <synonym>GPCho(18:0/16:0)</synonym>
    <synonym>1-Stearoyl-2-palmitoyl-sn-glycero-3-phosphocholine</synonym>
    <synonym>Lecithin</synonym>
    <synonym>GPCho(34:0)</synonym>
    <synonym>PC(18:0/16:0)</synonym>
  </synonyms>
  <chemical_formula>C42H84NO8P</chemical_formula>
  <average_molecular_weight>762.092</average_molecular_weight>
  <monisotopic_moleculate_weight>761.593455181</monisotopic_moleculate_weight>
  <iupac_name>(2-{[(2R)-2-(hexadecanoyloxy)-3-(octadecanoyloxy)propyl phosphonato]oxy}ethyl)trimethylazanium</iupac_name>
  <traditional_iupac>lecithin</traditional_iupac>
  <cas_registry_number/>
  <smiles>[H][C@@](COC(=O)CCCCCCCCCCCCCCCCC)(COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCC</smiles>
  <inchi>InChI=1S/C42H84NO8P/c1-6-8-10-12-14-16-18-20-21-23-24-26-28-30-32-34-41(44)48-38-40(39-50-52(46,47)49-37-36-43(3,4)5)51-42(45)35-33-31-29-27-25-22-19-17-15-13-11-9-7-2/h40H,6-39H2,1-5H3/t40-/m1/s1</inchi>
  <inchikey>BYSIMVBIJVBVPA-RRHRGVEJSA-N</inchikey>
  <taxonomy>
    <description> belongs to the class of organic compounds known as phosphatidylcholines. These are glycerophosphocholines in which the two free -OH are attached to one fatty acid each through an ester linkage.</description>
    <kingdom>Organic compounds</kingdom>
    <super_class>Lipids and lipid-like molecules</super_class>
    <class>Glycerophospholipids</class>
    <sub_class>Glycerophosphocholines</sub_class>
    <direct_parent>Phosphatidylcholines</direct_parent>
    <alternative_parents>
      <alternative_parent>Amines</alternative_parent>
      <alternative_parent>Carbonyl compounds</alternative_parent>
      <alternative_parent>Carboxylic acid esters</alternative_parent>
      <alternative_parent>Dialkyl phosphates</alternative_parent>
      <alternative_parent>Dicarboxylic acids and derivatives</alternative_parent>
      <alternative_parent>Fatty acid esters</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>Organic oxides</alternative_parent>
      <alternative_parent>Organic salts</alternative_parent>
      <alternative_parent>Organopnictogen compounds</alternative_parent>
      <alternative_parent>Phosphocholines</alternative_parent>
      <alternative_parent>Tetraalkylammonium salts</alternative_parent>
    </alternative_parents>
    <substituents>
      <substituent>Aliphatic acyclic compound</substituent>
      <substituent>Alkyl phosphate</substituent>
      <substituent>Amine</substituent>
      <substituent>Carbonyl group</substituent>
      <substituent>Carboxylic acid derivative</substituent>
      <substituent>Carboxylic acid ester</substituent>
      <substituent>Diacylglycero-3-phosphocholine</substituent>
      <substituent>Dialkyl phosphate</substituent>
      <substituent>Dicarboxylic acid or derivatives</substituent>
      <substituent>Fatty acid ester</substituent>
      <substituent>Fatty acyl</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Organic nitrogen compound</substituent>
      <substituent>Organic oxide</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organic phosphoric acid derivative</substituent>
      <substituent>Organic salt</substituent>
      <substituent>Organonitrogen compound</substituent>
      <substituent>Organooxygen compound</substituent>
      <substituent>Organopnictogen compound</substituent>
      <substituent>Phosphocholine</substituent>
      <substituent>Phosphoric acid ester</substituent>
      <substituent>Quaternary ammonium salt</substituent>
      <substituent>Tetraalkylammonium salt</substituent>
    </substituents>
    <molecular_framework>Aliphatic acyclic compounds</molecular_framework>
    <external_descriptors>
      <external_descriptor>Diacylglycerophosphocholines</external_descriptor>
      <external_descriptor>phosphatidylcholine 34:0</external_descriptor>
    </external_descriptors>
  </taxonomy>
  <experimental_properties>
    <state>Solid</state>
  </experimental_properties>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>5.62</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-7.58</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logp</kind>
      <value>9</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_acidic</kind>
      <value>1.86</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_basic</kind>
      <value>-6.7</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>iupac</kind>
      <value>(2-{[(2R)-2-(hexadecanoyloxy)-3-(octadecanoyloxy)propyl phosphonato]oxy}ethyl)trimethylazanium</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>average_mass</kind>
      <value>762.092</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>761.593455181</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>[H][C@@](COC(=O)CCCCCCCCCCCCCCCCC)(COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCC</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>C42H84NO8P</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/C42H84NO8P/c1-6-8-10-12-14-16-18-20-21-23-24-26-28-30-32-34-41(44)48-38-40(39-50-52(46,47)49-37-36-43(3,4)5)51-42(45)35-33-31-29-27-25-22-19-17-15-13-11-9-7-2/h40H,6-39H2,1-5H3/t40-/m1/s1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>BYSIMVBIJVBVPA-RRHRGVEJSA-N</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polar_surface_area</kind>
      <value>111.19</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>refractivity</kind>
      <value>225.07</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polarizability</kind>
      <value>94.8</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rotatable_bond_count</kind>
      <value>42</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>acceptor_count</kind>
      <value>4</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>
    <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>316744</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>316745</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>316746</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>363085</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>363086</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>363087</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2296793</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2296794</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2296795</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2358642</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2358643</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2358644</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2672618</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2672619</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2672620</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3032612</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3032613</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3032614</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3047238</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3047239</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3047240</spectrum_id>
    </spectrum>
  </spectra>
  <normal_concentrations>
    <concentration>
      <biospecimen>All Tissues</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>
    <concentration>
      <biospecimen>Milk</biospecimen>
      <concentration_value>2.45 +/- 0.04</concentration_value>
      <concentration_units>uM</concentration_units>
      <comment>Commercial 1% 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>4.7 +/- 0.1</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>5.2 +/- 0.1</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>Milk</biospecimen>
      <concentration_value>2.26 +/- 0.03</concentration_value>
      <concentration_units>uM</concentration_units>
      <comment>Commercial skim 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>
  </normal_concentrations>
  <chemspider_id/>
  <pubchem_compound_id>18631368</pubchem_compound_id>
  <chebi_id>75026</chebi_id>
  <foodb_id>FDB025225</foodb_id>
  <pdbe_id/>
  <meta_cyc_id/>
  <drugbank_id/>
  <phenol_explorer_compound_id/>
  <knapsack_id/>
  <kegg_id/>
  <bigg_id/>
  <wikipedia_id/>
  <metlin_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>
