Astec CHIRALDEX A-DA SUPELCO 手性氣相色譜柱 毛細管柱
- CD Type: α (alpha)
- Derivative: Dialkyl
- Tep. Liits: -10 °C t 200 °C (istheral) r 220 °C (prgraed)
Incrprates a phase cnsisting f a 2,6-di-O-pentyl-3-ethxy derivative f α-cycldextrin. This phase is gd fr separatins f hetercyclic aines. It has different selectivity fr ther phases and ften shws reversal in elutin fr the PH phases.
The dipentylated derivatives f alpha, beta and gaa cycldextrin shw prnunced selectivity differences based n the size, shape and functinality f the analyte. Strng evidence exists fr inclusin cplexatin which is the basic driving echanis and, therefre, reslutin is affected by saple lad. The beta-cycldextrin fr has the bradest applicability. Saple vlues under 1 icrliter at cncentratins f 5 g/L are typical with the 100/1 split rati.
Features:
- Hydrphbic surface
- Prnunced selectivity differences based n analyte size, shape and functinality
- Separates hetercyclic aines
- Different selectivity fr ther cycldextrin derivatives
- Often shws reversal in elutin rder fr PH series
Selectivity pririties:
- Alpha…Siple epxides, cyclic ethers, linear substituted alkanes
- Beta…Hetercyclic aines
- Gaa…Naphthyl analgs
Mechanis Observatins:
- Strnger inclusin fr DA and, therefre, size selectivity is iprtant.
- Critical teperature dependence fr enantiselectivity. Abve this teperature n separatin ccurs.
Astec CHIRALDEX A-DA SUPELCO 手性氣相色譜柱 毛細管柱
訂貨信息：
| Prduct # | Descriptin |
| 72003AST | Astec? CHIRALDEX? A-DA 毛細管氣相色譜柱 L × I.D. 30 × 0.25 , df 0.12 μ |
Astec CHIRALDEX A-DA
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