ontologies
PECO
Plant Experimental Conditions Ontology (PECO) OWL View license
Last submission date November 10, 2023
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ID http://purl.obolibrary.org/obo/CHEBI_35341
http://purl.obolibrary.org/obo/CHEBI_35341
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Preferred name

steroid

Synonyms

steroids

Definitions

Any of naturally occurring compounds and synthetic analogues, based on the cyclopenta[a]phenanthrene carbon skeleton, partially or completely hydrogenated; there are usually methyl groups at C-10 and C-13, and often an alkyl group at C-17. By extension, one or more bond scissions, ring expansions and/or ring contractions of the skeleton may have occurred. Natural steroids are derived biogenetically from squalene which is a triterpene.

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