簡要描述： Astec CHIRALDEX A-TA SUPELCO 手性氣相色譜柱 毛細管柱Supelco（色譜科）位于美國賓夕法尼亞州，是Sigma-Aldrich集團下屬的子品牌，Supelco一直通過提供更新的，更可靠的色譜產(chǎn)品和來幫助色譜工作者來解決問題，其涉及的領域和行業(yè)有環(huán)境、食品、飲料、政府、醫(yī)藥、化工等

Astec CHIRALDEX A-TA SUPELCO 手性氣相色譜柱 毛細管柱

• CD Type: α (alpha)
• Derivative: Trifluracetyl
• Tep. Liits: -10 °C t 180 °C (istheral r prgraed)

Incrprates a phase cnsisting f a 2,6-di-O-pentyl-3-trifluracetyl derivative f α-cycldextrin.

Trifluracetylatin f the 3 psitin hydrxyl grups after pentylatin f the 2,6 hydrxyl grups creates a phase with high selectivity fr xygen cntaining analytes in the fr f alchls, ketnes, acids, aldehydes, lactnes, and halgenated cpunds.

Features:

• Separates the widest variety f enantiers
• Separates the greatest nuber f enantiers
• Gaa re selective than beta fr
• Unique retentin behavir
• Extrardinary versatility and chiral selectivity

Analytes:

Useful fr hlgus series f:

• Ain acids (priary, secndary, aratic and aliphatic)
• Aines (priary, secndary, cyclic, aratic and halgenated)
• Ain alchls
• Alkanes, hydrgenated alkanes
• Alchls (aliphatic and aratic)
• Acids (halgenated and hydrxy)
• Esters (aratic, aliphatic, hydrxy, di-ester)
• DilsLactnesKetnes
• Phthalides
• Sulfxides

Mechanis Observatins:

• Strng diple-diple interactins
• Lnger alkyl chain; greater retentin; increase in enantiselectivity up t C4/C5
• Halgens knwn t favr cavity interactin

Diple-diple interactins are cnly identified in the echanis f separatin fr TA phases. In a hlgus series f alkane enantiers, identical alpha values are bserved regardless f chain length r branching indicating nly 1 r 2 carbns ay be cntributing t chiral recgnitin. Alpha values are greatly affected by size and plarity f the head grup. Functinal grups like epxides, ain alchls and alchls can dictate the cycldextrin selectin. Aldehydes, carbxylic acids and epxides separate better n the gaa while alchls, alchl aines and ther linear lecules separate better n the beta derivative.

Astec CHIRALDEX A-TA SUPELCO 手性氣相色譜柱 毛細管柱

訂貨信息：

Prduct #	Descriptin
73002AST	Astec? CHIRALDEX? A-TA 毛細管氣相色譜柱 L × I.D. 20 × 0.25 , df 0.12 μ
73003AST	Astec? CHIRALDEX? A-TA 毛細管氣相色譜柱 L × I.D. 30 × 0.25 , df 0.12 μ
73004AST	Astec? CHIRALDEX? A-TA 毛細管氣相色譜柱 L × I.D. 40 × 0.25 , df 0.12 μ
73005AST	Astec? CHIRALDEX? A-TA 毛細管氣相色譜柱 L × I.D. 50 × 0.25 , df 0.12 μ

Astec CHIRALDEX A-TA

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