Astec CHIRALDEX B-DP SUPELCO Astec CHIRALDEX B-DP手性氣相色譜柱毛細管柱

參考價	￥ 10515
訂貨量	≥1

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公司名稱 杭州亞萊博儀器有限公司
品牌 Supelco/美國色譜科
型號 Astec CHIRALDEX B-DP
產地美國
廠商性質 代理商
更新時間 2017/2/7 12:21:55
訪問次數 1752

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Astec CHIRALDEX B-DP Supelco 手性氣相色譜柱手性毛細管柱手性

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杭州亞萊博儀器有限公司長期專注于國內外色譜配件、耗材和色譜柱的代理銷售，并努力塑造和推廣alab品牌，alab品牌經營的產品精挑細選。亞萊博公司擁有一個專業、年輕、有活力的團隊，從銷售到技術支持都一直堅持精益求精、誠實守信的公司核心企業文化，用心服務于廣大客戶。代理品牌主要有：大連依利特、上海伍豐、蘭化所、中科安泰、上海月旭、蘇州賽分、天津艾杰爾、迪馬、Agilent、Waters、Shimadzu、GL、YMC、Restek、Grace、Alltech、Kromasil、ThermoFisher、Shodex、TOSOH TSKgel、Supelco、Phenomenex、Perkin-Elmer、Hamilton、SGE、Merck、MN等。

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液相色譜儀氣相色譜儀液相色譜柱毛細管柱色譜配件電子天平分光光度計酸度計電導率儀溶氧儀等等

詳細信息 在線詢價

SUPELCO Astec CHIRALDEX B-DP手性氣相色譜柱毛細管柱

CD Type: β (beta)
Derivative: Dipropionyl
Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)

Incorporates a phase consisting of a 2,3-di-O-propionyl-6-t-butyl silyl derivative of β-cyclodextrin. This phase exhibits good hydrolytic stability, broad chiral selectivity, and are excellent for aliphatic and aromatic amines. It is also good for many aliphatic and some aromatic esters as well as exhibiting high efficiency and resolution at low retention times for polar racemates.

Features:

Broad chiral selectivity
Good hydrolytic stability
Thermal limit 200/220
Excellent for aromatic and aliphatic amines
Good for many aliphatic and some aromatic esters
High efficiency and resolution at low retention times for polar racemates

Mechanism Observations:

Mostly surface interactions
Fused ring structures better selectivity on gamma
Acids have better selectivity as methyl rather than ethyl esters

Size Selectivity:

Both speed and sample capacity indicate a surface type mechanism for very polar racemates. Large bulky molecules still require a larger surface area than beta provides, therefore, an increase in selectivity is seen on the gamma derivative for fused ring structures. The smaller alpha cavity offered no selectivity while the beta covered the largest range of molecular sizes but the choice between beta and gamma is compound dependent for this phase.

SUPELCO Astec CHIRALDEX B-DP手性氣相色譜柱毛細管柱 訂貨信息：