CD Type: γ (gamma)
Derivative: Butyryl
Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)

Incorporates a phase consisting of a 2,6-di-O-pentyl-3-butyryl derivative of γ-cyclodextrin

This phase has shown its best selectivity for amino acids, certain amines and furan structures. It is a nonpolar phase and has the temperature stability of the alkyl type phases. It is considered a good alternative to the bonded amino phases with much broader separation capabilities.

  • Gamma most versatile
  • High selectivity for amino acids, amines, furans
  • Thermally stable

  • Mechanism Observations:
  • Alkyl chain on analyte contributes to chiral recognition
  • High sample capacity, therefore, primary surface interactions

Size Selectivity:
For this derivative, gamma-cyclodextrin exhibits a much broader selectivity than beta-cyclodextrin. The influence of the inclusion mechanism on selectivity is much reduced and capacities are, therefore, generally higher.

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75033AST Astec® CHIRALDEX® G-BP Capillary GC Column L × I.D. 30 m × 0.25 mm, df 0.12 μm