title: Gas--liquid chromatographic determination of vitamin D.
mesh_terms: D002762:Cholecalciferol / Q000032:analysis; D002849:Chromatography, Gas / Q000379:methods; D004304:Dosage Forms; D004872:Ergocalciferols / Q000032:analysis; D007536:Isomerism; D013329:Structure-Activity Relationship; D014801:Vitamin A / Q000032:analysis; D014807:Vitamin D / Q000032:analysis*; D014810:Vitamin E / Q000032:analysis
chemical_list: D004304:Dosage Forms; D004872:Ergocalciferols; D014801:Vitamin A; D014807:Vitamin D; D014810:Vitamin E; D002762:Cholecalciferol