Term Name:	halosterol A
Synonyms:	(22R)-22-hydroxystigmast-4-en-3-one, (22R,24R)-24-ethyl-3-oxo-cholest-4-ene-22-ol
Definition:	A 3-oxo steroid that is stigmast-4-en-3-one substituted by a hydroxy group at position 22 (the 22R stereoisomer). Isolated from the whole plants of Haloxylon recurvum, it exhibits chymotrypsin inhibitory activity.
Ontology:	ChEBI [CHEBI:65998]  ( EBI )