title: Statistical solvent optimization for the separation of geometric isomers of retinol by high-performance liquid chromatography.
abstract: A systematic approach to the optimization of solvents for separation of isomers of retinol by straight-phase high-performance liquid chromatography is described. The optimum resolution of the 11-cis isomer from the 13-cis isomer required solvent characteristics different from those for the optimum resolution of the 9-cis isomer from the all-trans isomer. A compromise solvent composition produced good resolution of all four isomers in less than 12 min when used with an Excalibar column packed with 5-micron spherical silica.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004987:Ethers; D006586:Hexanes; D008752:Methylene Chloride; D012997:Solvents; D013237:Stereoisomerism; D014801:Vitamin A / Q000032:analysis*
chemical_list: D004987:Ethers; D006586:Hexanes; D012997:Solvents; D014801:Vitamin A; D008752:Methylene Chloride; C011779:diisopropyl ether