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Macherey-Nagel™ LIPODEX™ E Capillary Columns for GC
Enables many compounds to be analyzed without derivatization. Macherey-Nagel™ LIPODEX™ E Capillary Columns for GC are phases with eight γ-cyclodextrin glucose units for enantiomer separation in gas chromatography. This lipophilic phase with long nonpolar ligants is a chemically non-bonded phase.
Marca: Macherey-Nagel™ 723368.50
Allerta:
Water as solvent is strictly forbidden for all cyclodextrin phases. It is recommended to dry the sample and dissolve it in an appropriate nonpolar solvent.
Descrizione
A major advantage of LIPODEX columns are that many compounds can be analyzed without derivatization. However, for certain substances, enantioselectivity can be favorably influenced by formation of derivatives. Regioselective alkylation and/or acylation of the hydroxyl groups leads to lipophilic phases with varying enantioselectivity, which are well suited for GC enantiomer analyses.
It is not possible to make a general prediction about which LIPODEX™ phase could solve a given separation task. Even for compounds with small structural differences or within homologous series, the enantiodifferentiation can be quite different.
- Base material: cyclic oligosaccharides consisting of eight γ-cyclodextrin glucose units bonded through α-1,4-linkages
- octakis-(2,6-di-O-pentyl-3-O-butyryl)-γ-cyclodextrin
- Ligands: R2=R6=pentyl, R3=butyryl; n=3
- Recommended for α-amino acids, α- and β-hydroxycarboxylic acid esters, alcohols (TFA), diols (TFA), ketones, pheromones (cyclic acetals), amines, alkyl halides, lactones
Specifica
| For isothermal operations: 200°C, For short isotherms in a temperature program: 220°C | |
| GC Capillary Column | |
| Lipodex™ E | |
| 50 m | |
| Non polar |
| 0.4 mm | |
| 0.25 mm | |
| Enantiomer Separation | |
| Lipodex™ E | |
| 1 Each |