γ-DEX 120

CD Type: γ (gamma)
Derivative: Permethylated
Phase: Non-bonded; 20% permethylated γ-cyclodextrin in SPB-35 poly(35% phenyl/65% dimethylsiloxane) phase
Temp. Limits: 30 °C to 230 °C (isothermal or programmed)

Of the three cyclodextrins, the permethylated γ-CD in γ-DEX 120 columns has the largest cavity. This makes the γ-CD molecule more flexible and less selective in differentiating most enantiomers. Still, some large analytes (e.g., α-BHC, carvone, carboxylic acids, methamphetamine) show the greatest enantiomeric differentiation on a γ-DEX 120 column.

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24307 γ-DEX 120 L × I.D. 30 m × 0.25 mm, df 0.25 μm