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Supelco

α-DEX™ 120

L × I.D. 30 m × 0.25 mm, df 0.25 μm

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EC Number:
262-373-8

material

fused silica

Quality Level

100

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; 20% permethylated α-cyclodextrin in SPB-35 poly(35% diphenyl/65% 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

Related Categories

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.
Containing permethylated α-cyclodextrin embedded in an intermediate polarity stationary phase, Supelco α-DEX 120 columns provide unique selectivity for enantiomeric separations of small molecules. They are also recommended for separating positional isomers (phenols, xylenes, etc.).

Application

α-DEX™ 120 was used in a GC column, in an experiment conducted to study the addition of catalytic enantioselective diethylzinc to a-substituted aldehyde, in presence of enantiopure ligand. It was also used to pack chiral column durin GC analysis, in an experiment to investigate lipase-mediated desymmetrization of glycerol with aliphatic and aromatic anhydrides.

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

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Lipase-mediated desymmetrization of glycerol with aromatic and aliphatic anhydrides.
Batovska D
Tetrahedron Asymmetry, 15 (22), 3551-3559 (2004)
A superior, readily available enantiopure ligand for the catalytic enantioselective addition of diethylzinc to a-substituted aldehydes.
Lluis S
The Journal of Organic Chemistry, 63 (20), 7078-7082 (1998)
Scott RPW.
Introduction to Analytical Gas Chromatography, 101-102 (1997)

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