全国统一热线:400-827-5257
产品中心您的位置:网站首页 > 产品中心 > 气相色谱柱 > SUPELCO气相色谱柱 > Astec CHIRALDEX A-TASUPELCO 手性气相色谱柱 毛细管柱
SUPELCO 手性气相色谱柱 毛细管柱

Astec CHIRALDEX A-TASUPELCO 手性气相色谱柱 毛细管柱

简要描述:

Astec CHIRALDEX A-TA SUPELCO 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

打印当前页

免费咨询:86-021-60545257,400-827-5257

发邮件给我们:elab17@163.com

分享到:

Astec CHIRALDEX A-TA SUPELCO 手性气相色谱柱 毛细管柱
 

  • CD Type: α (alpha)
  • Derivative: Trifluoroacetyl
  • Temp. Limits: -10 °C to 180 °C (isothermal or programmed)

    Incorporates a phase consisting of a 2,6-di-O-pentyl-3-trifluoroacetyl derivative of α-cyclodextrin.

    Trifluoroacetylation of the 3 position hydroxyl groups after pentylation of the 2,6 hydroxyl groups creates a phase with high selectivity for oxygen containing analytes in the form of alcohols, ketones, acids, aldehydes, lactones, and halogenated compounds.

Features: 

  • Separates the widest variety of enantiomers
  • Separates the greatest number of enantiomers
  • Gamma more selective than beta form
  • Unique retention behavior
  • Extraordinary versatility and chiral selectivity

Analytes:

Useful for homologous series of:

  • Amino acids (primary, secondary, aromatic and aliphatic)
  • Amines (primary, secondary, cyclic, aromatic and halogenated)
  • Amino alcohols
  • Alkanes, hydrogenated alkanes
  • Alcohols (aliphatic and aromatic)
  • Acids (halogenated and hydroxy)
  • Esters (aromatic, aliphatic, hydroxy, di-ester)
  • DiolsLactonesKetones
  • Phthalides
  • Sulfoxides

Mechanism Observations:

  • Strong dipole-dipole interactions
  • Longer alkyl chain; greater retention; increase in enantioselectivity up to C4/C5
  • Halogens known to favor cavity interaction

   Dipole-dipole interactions are commonly identified in the mechanism of separation for TA phases. In a homologous series of alkane enantiomers, identical alpha values are observed regardless of chain length or branching indicating only 1 or 2 carbons may be contributing to chiral recognition. Alpha values are greatly affected by size and polarity of the head group. Functional groups like epoxides, amino alcohols and alcohols can dictate the cyclodextrin selection. Aldehydes, carboxylic acids and epoxides separate better on the gamma while alcohols, alcohol amines and other linear molecules separate better on the beta derivative.

Astec CHIRALDEX A-TA SUPELCO 手性气相色谱柱 毛细管柱

订货信息:

Product #Description
73002AST Astec? CHIRALDEX? A-TA 毛细管气相色谱柱 L × I.D. 20 m × 0.25 mm, df 0.12 μm  
73003AST Astec? CHIRALDEX? A-TA 毛细管气相色谱柱 L × I.D. 30 m × 0.25 mm, df 0.12 μm  
73004AST Astec? CHIRALDEX? A-TA 毛细管气相色谱柱 L × I.D. 40 m × 0.25 mm, df 0.12 μm  
73005AST Astec? CHIRALDEX? A-TA 毛细管气相色谱柱 L × I.D. 50 m × 0.25 mm, df 0.12 μm  

Astec CHIRALDEX A-TA

订购:

上海屹利科学仪器有限公司  www.elab17。。cn   

上海屹利科学仪器有限公司(杭州办)   

上海屹利科学仪器有限公司www.elab17.com 热门推荐:液相色谱 气相色谱 色谱柱 分光光度计 电子天平 离心机 旋转蒸发仪 酸度计 离子计 等实验室仪器
公司地址:上海市松江区沈砖公路5555弄9号楼409室     网站地图    沪ICP备14028064号-1    公司首页 关于我们 新闻中心 产品中心 联系我们

地址:上海市松江区沈砖公路5555弄9号楼409室