Astec chiraldex a-ta gc col 30 m 0,25 mm

CD Type: α (alpha)
Derivative: Trifluoroacetyl
Temp. Limits: -10 °C to 180 °C (isothermal or programmed)
Incorporates a phase consisting of a 2,6-di-O-pentyl-3-trifluoroacetyl derivative of α-cyclodextrin.
Trifluoroacetylation of the 3 position hydroxyl groups after pentylation of the 2,6 hydroxyl groups creates a phase with high selectivity for oxygen containing analytes in the form of alcohols, ketones, acids, aldehydes, lactones, and halogenated compounds.
Features:
Separates the widest variety of enantiomers
Separates the greatest number of enantiomers
Gamma more selective than beta form
Unique retention behavior
Extraordinary versatility and chiral selectivity
Analytes:
Useful for homologous series of:
Amino acids (primary, secondary, aromatic and aliphatic)
Amines (primary, secondary, cyclic, aromatic and halogenated)
Amino alcohols
Alkanes, hydrogenated alkanes
Alcohols (aliphatic and aromatic)
Acids (halogenated and hydroxy)
Esters (aromatic, aliphatic, hydroxy, di-ester)
Diols
Lactones
Ketones
Phthalides
Sulfoxides
Mechanism Observations
Strong dipole-dipole interactions
Longer alkyl chain; greater retention; increase in enantioselectivity up to C4/C5
Halogens known to favor cavity interaction