A controlled vocabulary for the chemical object entity component of a P01 parameter concept in the BODC parameter semantic model
Terms and mappings available from: http://vocab.nerc.ac.uk/collection/S27/current/
Search interface: https://www.bodc.ac.uk/resources/vocabularies/vocabulary_search/S27/
S27 concepts are identified by their CAS Registry Number when one exists and mapped to entities defined in the Chemical Entities of Biological Interest (ChEBI) database if a match is found at the time the concept is created.