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首页>kaiyun登录app入口 >气相色谱柱>SUPELCO气相色谱柱>Astec CHIRALDEX G-DPSUPELCO Astec CHIRALDEX G-DP手性气相色谱柱毛细管柱

SUPELCO Astec CHIRALDEX G-DP手性气相色谱柱毛细管柱

简要描述：

SUPELCO Astec CHIRALDEX G-DP手性气相色谱柱毛细管柱
Supelco（色谱科）位于美国宾夕法尼亚州，是Sigma-Aldrich集团下属的子品牌，Supelco一直通过提供更新的，更可靠的色谱产品和来帮助色谱工作者来解决问题，其涉及的领域和行业有环境、食品、饮料、政府、医药、化工等

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详细介绍

SUPELCO Astec CHIRALDEX G-DP手性气相色谱柱毛细管柱

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

Incorporates a phase consisting of a 2,3-di-O-propionyl-6-t-butyl silyl derivative of γ-cyclodextrin. This phase exhibits good hydrolytic stability, broad chiral selectivity, and are excellent for aliphatic and aromatic amines. It is also good for many aliphatic and some aromatic esters as well as exhibiting high efficiency and resolution at low retention times for polar racemates.

Features:

Broad chiral selectivity
Good hydrolytic stability
Thermal limit 200/220 °C
Excellent for aromatic and aliphatic amines
Good for many aliphatic and some aromatic esters
High efficiency and resolution at low retention times for polar racemates

Mechanism Observations:

Mostly surface interactions
Fused ring structures better selectivity on gamma
Acids have better selectivity as methyl rather than ethyl esters

Size Selectivity:

Both speed and sample capacity indicate a surface type mechanism for very polar racemates. Large bulky molecules still require a larger surface area than beta provides, therefore, an increase in selectivity is seen on the gamma derivative for fused ring structures. The smaller alpha cavity offered no selectivity while the beta covered the largest range of molecular sizes but the choice between beta and gamma is compound dependent for this phase.

SUPELCO Astec CHIRALDEX G-DP手性气相色谱柱毛细管柱 订货信息：

Product #	Description
78033AST	Astec CHIRALDEX G-DP 毛细管气相色谱柱 L × I.D. 30m × 0.25 mm, d_f 0.12 μm

上一篇：Astec CHIRALDEX G-PNSUPELCO Astec CHIRALDEX G-PN手性气相色谱柱毛细管柱

下一篇：Astec CHIRALDEX G-DMSUPELCO Astec CHIRALDEX G-DM手性气相色谱柱毛细管柱

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