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

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SUPELCO Astec CHIRALDEX G-DA手性气相色谱柱 毛细管柱
Supelco（色(se)(se)谱(pu)(pu)科(ke)）位于(yu)美国(guo)宾(bin)夕法尼亚州，是Sigma-Aldrich团体部(bu)属的子品牌(pai)，Supelco一向经由过程(cheng)供给更新的，更靠得住(zhu)的色(s🔥e)(se)谱(pu)(pu)产物和来(l♈ai)赞助色(se)(se)谱(pu)(pu)任务者(zhe)来(lai)处理题目，其触及的范畴和行(xing)业有情况、食(shi)物、饮料(liao)、当局、医药(yao)、化工等

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

  • CD Type: γ (gamma)
  • Derivative: Dialkyl
  • Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)
    Incorporates a phase consisting of a 2,6-di-O-pentyl-3-methoxy derivative of γ-cyclodextrin. This phase is good for separations of heterocyclic amines. It has different selectivity from other phases and often shows reversal in elution from the PH phases.    The dipentylated derivatives of alpha, beta and gamma cyclodextrin show pronounced selectivity differences based on the size, shape and functionality of the analyte. Strong evidence exists for inclusion complexation which is the basic driving mechanism and, therefore, resolution is affected by sample load. The beta-cyclodextrin form has the broadest applicability. Sample volumes under 1 microliter at concentrations of 5 mg/mL are typical with the 100/1 split ratio.

Features: 

  • Hydrophobic surfacePronounced selectivity
  • differences based on analyte size, shape and functionality
  • Separates heterocyclic amines
  • Different selectivity from other cyclodextrin derivatives
  • Often shows reversal in elution order from PH series

Selectivity priorities:

  • Alpha…Simple epoxides, cyclic ethers, linear substituted alkanes
  • Beta…Heterocyclic amines
  • Gamma…Naphthyl analogs

Mechanism Observations:

    Stronger inclusion for DA and, therefore, size selectivity is important. Critical temperature dependence for enantioselectivity. Above this temperature no separation occurs. 

SUPELCO Astec CHIRALDEX G-DA手性气相色谱柱 毛细管柱 定货产品信息：

Product #Description
72033ASTAstec CHIRALDEX G-DA 毛细管气相色谱柱 L × I.D. 30m × 0.25 mm, df 0.12 μm