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SUPELCO Astec CHIRALDEX G-TA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(lǐng)域和行業(yè)有環(huán)境、食品、飲料、政府、醫(yī)藥、化工等
SUPELCO Astec CHIRALDEX G-TA手性氣相色譜柱 毛細管柱
Incorporates a phase consisting of a 2,6-di-O-pentyl-3-trifluoroacetyl derivative of γ-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:
Analytes:
Useful for homologous series of:
Mechanism Observations:
Strong dipole-dipole interactionsLonger alkyl chain; greater retention; increase in enantioselectivity up to C4/C5Halogens 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.
Included in GC Screening Kit 71030AST.
SUPELCO Astec CHIRALDEX G-TA手性氣相色譜柱 毛細管柱 訂貨信息：
| Product # | Description |
| 73031AST | Astec CHIRALDEX G-TA 毛細管氣相色譜柱 L × I.D. 10m × 0.25 mm, df 0.12 μm |
| 73032AST | Astec CHIRALDEX G-TA 毛細管氣相色譜柱 L × I.D. 20m × 0.25 mm, df 0.12 μm |
| 73033AST | Astec CHIRALDEX G-TA 毛細管氣相色譜柱 L × I.D. 30m × 0.25 mm, df 0.12 μm |
| 73034AST | Astec CHIRALDEX G-TA 毛細管氣相色譜柱 L × I.D. 40m × 0.25 mm, df 0.12 μm |
| 73035AST | Astec CHIRALDEX G-TA 毛細管氣相色譜柱 L × I.D. 50m × 0.25 mm, df 0.12 μm |
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