Term Name: C21-steroid
Synonyms: a C21-steroid
Definition: A steroid that has a structure based on a 21-carbon (pregnane) skeleton. Note that individual examples may have ring substituents at other positions and/or contain double bonds, aromatic A-rings, expanded/contracted rings etc., so the formula and mass may vary from that given for the generic structure.
Ontology: ChEBI [CHEBI:61313]  ( EBI )

Relationships
is a type of: steroid
has subtype: 3-hydroxypregnan-20-one 3alpha,17alpha-dihydroxy-5beta-pregnan-20-one 3beta-hydroxy-16alpha,17alpha-epoxypregnenolone 4-pregnen-3beta,20alpha-diol 4-pregnen-3beta-ol-20-one 5alpha-pregnane 5beta-pregn-11-ene-3,20-dione 5beta-pregnane 5beta-pregnane-3,20-dione 6alpha-hydroxyprednisolone 6alpha-hydroxyprednisone 6beta,16alpha,17alpha-trihydroxyprogesterone 6beta-hydroxycortisol 6beta-hydroxycortisone 6beta-hydroxyprednisolone 6beta-hydroxyprednisone 7-ketopregnenolone 7alpha-hydroxypregnenolone 7beta-hydroxypregnenolone 9,11alpha-epoxypregn-4-ene-3,20-dione 11,21-dioxoprogesterone 16-hydroxyprednisolone 17,20-dihydroxypregn-4-en-3-one 17alpha-hydroxy-C21-steroid 17alpha-hydroxypregn-5-ene-3,20-dione 20-hydroxy-3-oxopregn-4-en-21-al 20-hydroxypregn-4-en-3-one 20alpha-dihydroprednisolone 20alpha-dihydroprednisone 20beta-dihydroprednisolone 20beta-dihydroprednisone 20beta-hydroxycortisone 21-dehydrocortisol 21-dehydrocortisone 21-hydroxy-C21-steroid algestone C21-steroid hormone corticosterone cortisone Delta(6)-prednisolone Delta(6)-prednisone fludrocortisone hydroxypregnenolone prednisolone prednisone pregn-4-en-3-one pregn-5-ene-3,20-dione pregna-4,9(11)-diene-3,20-dione pregnan-21-al pregnan-21-ol pregnenolone