title: Studies on the isomerization of vitamin D and related componds with acidic reagents. I. A simple method for the determination of vitamin D2 isomers in mixtures.
mesh_terms: D000143:Acids; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D007536:Isomerism; D014807:Vitamin D / Q000302:isolation & purification*
chemical_list: D000143:Acids; D007202:Indicators and Reagents; D014807:Vitamin D