title: Sterols in Porphyridium species. 4alpha-methyl-5alpha-cholesta-8,22-dien-3beta-ol and 4alpha, 24epsilon-dimethyl-5alpha-cholesta-8,22-dien-3beta-ol: two novel sterols from Porphyridium cruentum.
mesh_terms: D000535:Aluminum; D002775:Cholestadienols / Q000032:analysis; D002782:Cholestenes / Q000032:analysis; D002845:Chromatography; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010840:Phytosterols / Q000032:analysis* / Q000096:biosynthesis / Q000302:isolation & purification; D000461:Rhodophyta / Q000032:analysis* / Q000378:metabolism; D013045:Species Specificity; D013055:Spectrophotometry, Infrared
chemical_list: D002775:Cholestadienols; D002782:Cholestenes; D010840:Phytosterols; D000535:Aluminum