<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2010-04-08 22:05:50 UTC</creation_date>
  <update_date>2025-11-18 22:53:01 UTC</update_date>
  <accession>FDB003531</accession>
  <name>1,2-Epithiopropane</name>
  <description>1,2-epithiopropane, also known as methylthiirane, is a member of the class of compounds known as thiiranes. Thiiranes are heterocyclic compounds containing a saturated three-member ring with two carbon atoms and one sulfur atom. 1,2-epithiopropane can be found in soft-necked garlic, which makes 1,2-epithiopropane a potential biomarker for the consumption of this food product. </description>
  <synonyms>
    <synonym>2-Methylthiacyclopropane</synonym>
    <synonym>2-Methylthiirane</synonym>
    <synonym>Episulphide deriv.</synonym>
    <synonym>MethylthIIrane</synonym>
    <synonym>Propane, 1,2-epithio-</synonym>
    <synonym>Propene sulfide</synonym>
    <synonym>Propylene episulfide</synonym>
    <synonym>Propylene sulfide</synonym>
    <synonym>Propylene sulphide</synonym>
    <synonym>Thiirane, 2-methyl-</synonym>
    <synonym>ThIIrane, methyl-</synonym>
  </synonyms>
  <chemical_formula>C3H6S</chemical_formula>
  <average_molecular_weight>74.145</average_molecular_weight>
  <monisotopic_moleculate_weight>74.019020882</monisotopic_moleculate_weight>
  <iupac_name>2-methylthiirane</iupac_name>
  <traditional_iupac>thiirane, methyl-</traditional_iupac>
  <cas_registry_number/>
  <smiles>CC1CS1</smiles>
  <inchi>InChI=1S/C3H6S/c1-3-2-4-3/h3H,2H2,1H3</inchi>
  <inchikey>MBNVSWHUJDDZRH-UHFFFAOYSA-N</inchikey>
  <taxonomy>
    <description> belongs to the class of organic compounds known as thiiranes. These are heterocyclic compounds containing a saturated three-member ring with two carbon atoms and one sulfur atom.</description>
    <direct_parent>Thiiranes</direct_parent>
    <kingdom>Organic compounds</kingdom>
    <super_class>Organoheterocyclic compounds</super_class>
    <class>Thiiranes</class>
    <sub_class/>
    <molecular_framework>Aliphatic heteromonocyclic compounds</molecular_framework>
    <alternative_parents>
      <alternative_parent>Dialkylthioethers</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
    </alternative_parents>
    <substituents>
      <substituent>Aliphatic heteromonocyclic compound</substituent>
      <substituent>Dialkylthioether</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Thiirane</substituent>
      <substituent>Thioether</substituent>
    </substituents>
    <external_descriptors>
    </external_descriptors>
  </taxonomy>
  <state>liquid</state>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>1.20</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-0.79</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>1.20e+01 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
    <property>
      <kind>melting_point</kind>
      <value>-91 oC</value>
    </property>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>0.92</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>2-methylthiirane</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>74.145</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>74.019020882</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>CC1CS1</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C3H6S</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C3H6S/c1-3-2-4-3/h3H,2H2,1H3</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>MBNVSWHUJDDZRH-UHFFFAOYSA-N</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polar_surface_area</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>refractivity</kind>
    <value>21.72</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>8.26</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>acceptor_count</kind>
    <value>0</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>
  <pathways>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>64758</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>64759</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>64760</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>122001</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>122002</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>122003</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3599198</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3599199</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3599200</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3599201</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3599202</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3599203</spectrum_id>
    </spectrum>
  </spectra>
  <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>
    <food>
      <name>Garden onion</name>
      <food_type>Type 1</food_type>
      <category>specific</category>
      <name_scientific>Allium cepa</name_scientific>
      <ncbi_taxonomy_id>4679</ncbi_taxonomy_id>
    </food>
    <food>
      <name>Soft-necked garlic</name>
      <food_type>Type 1</food_type>
      <category>specific</category>
      <name_scientific>Allium sativum L. var. sativum</name_scientific>
      <ncbi_taxonomy_id>4682</ncbi_taxonomy_id>
      <average_value>0.088</average_value>
      <max_value>0.088</max_value>
      <min_value>0.088</min_value>
      <unit>mg/100 g</unit>
    </food>
  </foods>
  <flavors>
  </flavors>
  <enzymes>
  </enzymes>
  <health_effects>
  </health_effects>
</compound>
