title: 31-nordihydrolanosterol, a minor 4-alpha-methyl sterol in pollen of Taraxacum dens leonis.
mesh_terms: D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D004952:Esters / Q000302:isolation & purification; D019684:Magnoliopsida / Q000032:analysis; D013058:Mass Spectrometry; D011058:Pollen / Q000032:analysis*; D013261:Sterols / Q000096:biosynthesis / Q000302:isolation & purification*
chemical_list: D004952:Esters; D013261:Sterols