Source:http://linkedlifedata.com/resource/umls/id/C0054028
NCI: Phytosterol with a double bond at the 22nd carbon and a methyl group at the 24th carbon.,NCI: A steroid derivative characterized by the hydroxyl group in position C-3 of the steroid skeleton, elimination of carbon 24.2 of the alkyl substituent, and unsaturated bonds in position 5-6 of the B ring, and position 22-23 in the alkyl substituent. It is synthesized by several unicellular algae and some terrestrial plants.