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

Astec CHIRALDEX G-DM SUPELCO 手性气相色谱柱，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技术支持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

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

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

     Incorporates a phase consisting of a 2,3-di-O-methyl-6-t-butyl silyl derivative of γ-cyclodextrin. This phase exhibits broad chiral selectivity, resolving aliphatic, olefenic, ａnd aromatic enantiomers. This particular dimethyl phase has been devised to overlap with the applications of both the PM ａnd PH series of columns. To date, it has shown similar selectivities with shorter retention times ａnd greater resolution. It also has exhibited thermal stability equivalent to the PM ａnd is, therefore, the column of choice when elution temperature of the analyte exceeds 200°C.

Features: 

• Broad chiral selectivity
• Combines selectivity of PM ａnd PH
• Thermal limit to 200/220 °C
• Short retention, high resolution
• Beta derivative broadly applicable
• Resolves aliphatic, olefenic ａnd aromatic enantiomers

Mechanism Observations:

• Size selectivity present but not dominant as in DA
• Fewer structural requirements
• Characteristic temperature selectivity

Size Selectivity:

    Size selectivity is evident; therefore, the inclusion mechanism is playing a role in the separation mechanism but does not dominate as it does in the DA series. The beta form as in the PH series covers a very broad range of molecular sizes and, therefore, has the greatest applicability.

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

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

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