24312

γ-DEX^™ 225

L × I.D. 30 m × 0.25 mm, d_f 0.25 μm

• Synonym(s): γ-DEX^™ 225, 30M .25MM .25UM
• UNSPSC Code: 41115710
• eCl@ss: 32119290

Properties

• material: fused silica
• description: GC capillary column
• parameter: 30-230 °C temperature
• Beta value: 250
• df: 0.25 μm
• technique(s): gas chromatography (GC): suitable
• L × I.D.: 30 m × 0.25 mm
• matrix active group: non-bonded; 25% 2,3-di-O-acetyl-6-O-TBDMS-γ-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase
• application(s): 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)
• column type: capillary chiral
• separation technique: chiral
• storage temp.: 2-8°C

Description

General description

Capillary GC column is also known as open tubular column. The carrier gas flows through the central aperture and is unrestricted throughout the length of the column.

The chiral stationary phase in γ-DEX 225 columns contains 2,3-di-O-acetyl-6-0-TBDMS-γ-cyclodextrin embedded in an intermediate polarity phase.

Application

γ-DEX^™ 225 GC column was used during asymmetric highly enantioselective copper catalytic conjugate addition of Et₂Zn to enones, using monodentate chiral spiro phosphoramidite ligands.

Chem/Phys Resistance

Temp. Limits:

• 30 °C to 230 °C

Other Notes

We offer a variety of chromatography accessories including analytical syringes

Legal Information

DEX is a trademark of Sigma-Aldrich Co. LLC