<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2016-05-19 03:02:43 UTC</creation_date>
  <update_date>2026-08-22 18:13:25 UTC</update_date>
  <accession/>
  <common_name>2-Butyne-1,4-diol</common_name>
  <class>SmallMolecule</class>
  <description>2-Butyne-1,4-diol is an organic compound with the chemical formula C4H6O2 and an average molecular weight of 86.09 g/mol. 2-Butyne-1,4-diol belongs to the alcohols and polyols, a subclass of organooxygen compounds within the organic compounds.

This substance has been identified in or released from 18 recorded sources. These sources include drinking water and water supply, specifically drinking water. In the context of food, food processing and cookware, it is associated with fermentation processes for beer. Within household cleaning and consumer products, it is found in soap detergents. Additionally, it is linked to electrical and electronic equipment, including antennas, auxiliary devices, contacts, cores yokes or armatures, conductors or conductive bodies characterised by the conductive materials, and 10 other sources. The recorded exposure route for this compound is oral.</description>
  <categories/>
  <types/>
  <synonyms>
    <synonym>but-2-yne-1,4-diol</synonym>
  </synonyms>
  <chemical_formula>C4H6O2</chemical_formula>
  <average_molecular_weight>86.09</average_molecular_weight>
  <monisotopic_moleculate_weight>86.036779433</monisotopic_moleculate_weight>
  <iupac_name>but-2-yne-1,4-diol</iupac_name>
  <traditional_iupac>butynediol</traditional_iupac>
  <cas_registry_number>110-65-6</cas_registry_number>
  <smiles>OCC#CCO</smiles>
  <inchi>InChI=1S/C4H6O2/c5-3-1-2-4-6/h5-6H,3-4H2</inchi>
  <inchikey>DLDJFQGPPSQZKI-UHFFFAOYSA-N</inchikey>
  <taxonomy>
    <kingdom>Organic compounds</kingdom>
    <super_class>Organic oxygen compounds</super_class>
    <class>Organooxygen compounds</class>
    <sub_class>Alcohols and polyols</sub_class>
    <direct_parent>Primary alcohols</direct_parent>
    <alternate_parents>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
    </alternate_parents>
    <substituents>
      <substituent>Aliphatic acyclic compound</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Primary alcohol</substituent>
    </substituents>
    <molecular_framework>Aliphatic acyclic compounds</molecular_framework>
    <descriptors>
      <descriptor>a small molecule</descriptor>
      <descriptor>butynediol</descriptor>
    </descriptors>
  </taxonomy>
  <status>Detected and Not Quantified</status>
  <origin/>
  <cellular_locations/>
  <biofluid_locations/>
  <tissue_locations/>
  <pathways/>
  <state/>
  <appearance/>
  <experimental_properties>
    <property>
      <kind>logp</kind>
      <value>-1.1</value>
    </property>
  </experimental_properties>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>-0.90</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-1.26</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>4.75e+00 g/l</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logp</kind>
      <value>-0.73</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_acidic</kind>
      <value>13.94</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_basic</kind>
      <value>-3.1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>iupac</kind>
      <value>but-2-yne-1,4-diol</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>average_mass</kind>
      <value>86.09</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>86.036779433</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>OCC#CCO</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>C4H6O2</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/C4H6O2/c5-3-1-2-4-6/h5-6H,3-4H2</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>DLDJFQGPPSQZKI-UHFFFAOYSA-N</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polar_surface_area</kind>
      <value>40.46</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>refractivity</kind>
      <value>23.12</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polarizability</kind>
      <value>8.88</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rotatable_bond_count</kind>
      <value>2</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>acceptor_count</kind>
      <value>2</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/>
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  <use_source/>
  <min_risk_level/>
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  <symptoms/>
  <treatment/>
  <drugbank_id/>
  <hmdb_id/>
  <pubchem_compound_id>8066</pubchem_compound_id>
  <chembl_id/>
  <chemspider_id>7775</chemspider_id>
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</compound>
