-10-200 °C temperature (isothermal) -10-220 °C temperature (programmed)
Valor Beta
500
df
0.12 μm
técnicas
gas chromatography (GC): suitable
L × D.I.
30 m × 0.25 mm
grupo activo de la matriz
non-bonded; 2,6-di-O-pentyl-3-methoxy derivative of β-cyclodextrin phase
aplicaciones
agriculture chemicals and industrial polymers cleaning products clinical cosmetics environmental flavors and fragrances food and beverages forensics and toxicology life science and biopharma personal care pharmaceutical (small molecule)
CHIRALDEX B-DA requires that analytes possess a minimum of two ring structures, one of which is unsaturated (aromatic) α, β to the stereogenic center. Examples include fluoxetine, methylphenidate and chloropheniramine. Inclusion complexation or proper fit between the analyte and cyclodextrin cavity is the dominant enantioselectivity mechanism for the DA series. There must be an includable group α or β to the stereogenic center for chiral recognition. Since CHIRALDEX DA columns most effectively separate multi-ring analytes, analysis temperatures are often higher than 150°C. Enantioselectivity has been observed at temperatures >200°C (fluoxetine acetyl derivative).
Resistencia química o física
Temp. Limits:
-10 °C to 200 °C isothermal, 220 °C programmed
Otras notas
We offer a variety of chromatography accessories including analytical syringes
Información legal
Astec is a registered trademark of Merck KGaA, Darmstadt, Germany
Structurally informative response patterns of some monoterpenoids found in volatile oils to gas chromatography on two commercial dipentylated cyclodextrin phases
Betts, T.J.
Journal of Chromatography A, 639 (2), 366-370 (1993)
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