<http://schema.org/ChemicalSubstance>	<http://www.w3.org/2000/01/rdf-schema#comment>	"A chemical substance is 'a portion of matter of constant composition, composed of molecular entities of the same type or of different types' (source: [ChEBI:59999](https://www.ebi.ac.uk/chebi/searchId.do?chebiId=59999))." .
<http://schema.org/ChemicalSubstance>	<http://schema.org/source>	<https://www.ebi.ac.uk/chebi/searchId.do?chebiId=59999> .
<http://schema.org/ChemicalSubstance>	<http://schema.org/source>	<http://bioschemas.org> .
<http://schema.org/ChemicalSubstance>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2000/01/rdf-schema#Class> .
<http://schema.org/ChemicalSubstance>	<http://www.w3.org/2000/01/rdf-schema#label>	"ChemicalSubstance" .
<http://schema.org/ChemicalSubstance>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://schema.org/BioChemEntity> .
<http://schema.org/ChemicalSubstance>	<http://schema.org/isPartOf>	<http://pending.schema.org> .