Astec CHIRALDEX B-DP SUPELCO Astec CHIRALDEX B-DP手性氣相色譜柱 毛細(xì)管柱
| 參考價(jià) | ￥ 10515 |
| 訂貨量 | ≥1 |
- 公司名稱(chēng) 杭州亞萊博儀器有限公司
- 品牌 Supelco/美國(guó)色譜科
- 型號(hào) Astec CHIRALDEX B-DP
- 產(chǎn)地 美國(guó)
- 廠(chǎng)商性質(zhì) 代理商
- 更新時(shí)間 2017/2/7 12:21:55
- 訪(fǎng)問(wèn)次數(shù) 1144
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液相色譜儀 氣相色譜儀 液相色譜柱 毛細(xì)管柱 色譜配件 電子天平 分光光度計(jì) 酸度計(jì) 電導(dǎo)率儀 溶氧儀等等
SUPELCO Astec CHIRALDEX B-DP手性氣相色譜柱 毛細(xì)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(xì)管柱 訂貨信息：
| Product # | Description |
| 78023AST | Astec CHIRALDEX B-DP 毛細(xì)管氣相色譜柱 L × I.D. 30 m × 0.25 mm, df 0.12 μm |
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