<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2016-05-22 03:36:08 UTC</creation_date>
  <update_date>2026-03-26 22:18:42 UTC</update_date>
  <accession/>
  <common_name>Coumestrol</common_name>
  <class>SmallMolecule</class>
  <description>Coumestrol is an organic compound with the chemical formula C15H8O5 and an average molecular weight of 268.22 g/mol. Coumestrol belongs to the coumestans, a subclass of isoflavonoids within the organic compounds. It is further categorized under the superclass of phenylpropanoids and polyketides.

The compound is found in or released from 16 recorded sources across several industrial and consumer sectors. Within the electrical and electronic equipment sector, it is associated with cell phones, capacitors, wires and cables, batteries, and printed circuit boards, among others. In the food, food processing and cookware sector, it is linked to food packaging, the treatment of hops, and the preparation of vinegar, wine, or sparkling wine. Its presence is also recorded in textiles, leather and furnishings, specifically in carpets, rugs, and synthetic textiles. Additionally, coumestrol is found in medical devices within the healthcare, pharmaceuticals and veterinary products sector, and in lubricants used in both industrial manufacturing, chemical processing, and the energy, oil and gas sectors. One further sector is also recorded. Exposure to this compound can occur through oral, inhalation, and touch routes.</description>
  <categories/>
  <types>
    <type>PFAS</type>
    <type>Phytotoxin</type>
  </types>
  <synonyms>
    <synonym>Coumesterol</synonym>
  </synonyms>
  <chemical_formula>C15H8O5</chemical_formula>
  <average_molecular_weight>268.224</average_molecular_weight>
  <monisotopic_moleculate_weight>268.037173358</monisotopic_moleculate_weight>
  <iupac_name>5,14-dihydroxy-8,17-dioxatetracyclo[8.7.0.0²,⁷.0¹¹,¹⁶]heptadeca-1(10),2(7),3,5,11,13,15-heptaen-9-one</iupac_name>
  <traditional_iupac>coumestrol</traditional_iupac>
  <cas_registry_number>479-13-0</cas_registry_number>
  <smiles>OC1=CC2=C(C=C1)C1=C(O2)C2=C(OC1=O)C=C(O)C=C2</smiles>
  <inchi>InChI=1S/C15H8O5/c16-7-1-3-9-11(5-7)19-14-10-4-2-8(17)6-12(10)20-15(18)13(9)14/h1-6,16-17H</inchi>
  <inchikey>ZZIALNLLNHEQPJ-UHFFFAOYSA-N</inchikey>
  <taxonomy>
    <kingdom>Organic compounds</kingdom>
    <super_class>Phenylpropanoids and polyketides</super_class>
    <class>Isoflavonoids</class>
    <sub_class>Coumestans</sub_class>
    <direct_parent>Coumestans</direct_parent>
    <alternate_parents>
      <alternative_parent>1-benzopyrans</alternative_parent>
      <alternative_parent>1-hydroxy-2-unsubstituted benzenoids</alternative_parent>
      <alternative_parent>Angular furanocoumarins</alternative_parent>
      <alternative_parent>Benzofurans</alternative_parent>
      <alternative_parent>Furans</alternative_parent>
      <alternative_parent>Furopyrans</alternative_parent>
      <alternative_parent>Heteroaromatic compounds</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>Lactones</alternative_parent>
      <alternative_parent>Organic oxides</alternative_parent>
      <alternative_parent>Organooxygen compounds</alternative_parent>
      <alternative_parent>Oxacyclic compounds</alternative_parent>
      <alternative_parent>Pyranones and derivatives</alternative_parent>
    </alternate_parents>
    <substituents>
      <substituent>1-benzopyran</substituent>
      <substituent>1-hydroxy-2-unsubstituted benzenoid</substituent>
      <substituent>Angular furanocoumarin</substituent>
      <substituent>Aromatic heteropolycyclic compound</substituent>
      <substituent>Benzenoid</substituent>
      <substituent>Benzofuran</substituent>
      <substituent>Benzopyran</substituent>
      <substituent>Coumarin</substituent>
      <substituent>Coumestan</substituent>
      <substituent>Furan</substituent>
      <substituent>Furanocoumarin</substituent>
      <substituent>Furopyran</substituent>
      <substituent>Heteroaromatic compound</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Lactone</substituent>
      <substituent>Organic oxide</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organoheterocyclic compound</substituent>
      <substituent>Organooxygen compound</substituent>
      <substituent>Oxacycle</substituent>
      <substituent>Pyran</substituent>
      <substituent>Pyranone</substituent>
    </substituents>
    <molecular_framework>Aromatic heteropolycyclic compounds</molecular_framework>
    <descriptors>
      <descriptor>Coumestan flavonoids</descriptor>
      <descriptor>Coumestan flavonoids</descriptor>
      <descriptor>Coumestanes</descriptor>
      <descriptor>an isoflavone</descriptor>
      <descriptor>coumestans</descriptor>
      <descriptor>delta-lactone</descriptor>
      <descriptor>polyphenol</descriptor>
    </descriptors>
  </taxonomy>
  <status>Detected and Not Quantified</status>
  <origin/>
  <cellular_locations/>
  <biofluid_locations/>
  <tissue_locations/>
  <pathways/>
  <state/>
  <appearance/>
  <experimental_properties/>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>2.43</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-2.98</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>2.81e-01 g/l</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logp</kind>
      <value>2.4</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_acidic</kind>
      <value>7.11</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_basic</kind>
      <value>-3.1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>iupac</kind>
      <value>5,14-dihydroxy-8,17-dioxatetracyclo[8.7.0.0²,⁷.0¹¹,¹⁶]heptadeca-1(10),2(7),3,5,11,13,15-heptaen-9-one</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>average_mass</kind>
      <value>268.224</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>268.037173358</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>OC1=CC2=C(C=C1)C1=C(O2)C2=C(OC1=O)C=C(O)C=C2</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>C15H8O5</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/C15H8O5/c16-7-1-3-9-11(5-7)19-14-10-4-2-8(17)6-12(10)20-15(18)13(9)14/h1-6,16-17H</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>ZZIALNLLNHEQPJ-UHFFFAOYSA-N</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polar_surface_area</kind>
      <value>79.9</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>refractivity</kind>
      <value>69.62</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polarizability</kind>
      <value>26.41</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rotatable_bond_count</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>acceptor_count</kind>
      <value>3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>donor_count</kind>
      <value>2</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>
  </predicted_properties>
  <route_of_exposure/>
  <mechanism_of_toxicity/>
  <metabolism/>
  <toxicity/>
  <lethaldose/>
  <carcinogenicity/>
  <use_source/>
  <min_risk_level/>
  <health_effects>#&lt;HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f7224a897e0&gt;</health_effects>
  <symptoms/>
  <treatment/>
  <drugbank_id/>
  <hmdb_id/>
  <pubchem_compound_id>5281707</pubchem_compound_id>
  <chembl_id/>
  <chemspider_id>4445024</chemspider_id>
  <kegg_id/>
  <uniprot_id/>
  <omim_id/>
  <chebi_id/>
  <biocyc_id/>
  <ctd_id/>
  <stitch_id/>
  <actor_id/>
  <pdb_id/>
  <wikipidia/>
  <general_references/>
  <targets>
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  </targets>
</compound>
