title: Chromatography of vitamin A compounds on silicic acid columns.
mesh_terms: D002845:Chromatography; D002855:Chromatography, Thin Layer; D004872:Ergocalciferols / Q000302:isolation & purification; D004952:Esters; D008055:Lipids; D008722:Methods; D012822:Silicon Dioxide; D013237:Stereoisomerism; D014801:Vitamin A / Q000302:isolation & purification*; D014810:Vitamin E / Q000302:isolation & purification
chemical_list: D004872:Ergocalciferols; D004952:Esters; D008055:Lipids; D014801:Vitamin A; D014810:Vitamin E; D012822:Silicon Dioxide