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Macherey-Nagel™ LIPODEX™ B Capillary Columns for GC
Enables many compounds to be analyzed without derivatization. Macherey-Nagel™ LIPODEX™ B Capillary Columns for GC are phases with six α-cyclodextrin glucose units for enantiomer separation in gas chromatography. This lipophilic phase with long nonpolar ligants is a chemically non-bonded phase.
Brand: Macherey-Nagel™ 723362.25
Alert:
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.
Description
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 six α-cyclodextrin glucose units bonded through α-1,4-linkages
- hexakis-(2,6-di-O-pentyl-3-O-acetyl)-α-cyclodextrin
- Ligands: R2=R6=pentyl, R3=acetyl; n=1
- Recommended for lactones, diols (cyclic carbonates), aminols, aldols (O-TFA), glycerol derivatives (cyclic carbonates)
Specifications
For isothermal operations: 200°C, For short isotherms in a temperature program: 220°C | |
GC Capillary Column | |
Lipodex™ B | |
25 m | |
Non polar |
0.4 mm | |
0.25 mm | |
Enantiomer Separation | |
Lipodex™ B | |
1 Each |
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