国产日产欧美精品-亚洲国产综合久久精品-色综合色国产热无码一-亚洲欧美日本国产,免费观看一区二区三区_在线观看片A免费不卡观看_亚洲а∨天堂久久精品_99久无码中文字幕一本久道

上海屹利科學(xué)儀器有限公司
中級會(huì)員 | 第12年

18602129317

當(dāng)前位置:上海屹利科學(xué)儀器有限公司>>氣相色譜柱>>SUPELCO氣相色譜柱>> Astec CHIRALDEX G-DASUPELCO 手性氣相色譜柱 毛細(xì)管柱

SUPELCO 手性氣相色譜柱 毛細(xì)管柱

參  考  價(jià)面議
具體成交價(jià)以合同協(xié)議為準(zhǔn)

產(chǎn)品型號Astec CHIRALDEX G-DA

品       牌Supelco/美國色譜科

廠商性質(zhì)代理商

所  在  地上海市

更新時(shí)間:2015-11-12 20:59:55瀏覽次數(shù):1574次

聯(lián)系我時(shí),請告知來自 化工儀器網(wǎng)
同類優(yōu)質(zhì)產(chǎn)品更多>
Astec CHIRALDEX G-DA SUPELCO 手性氣相色譜柱 毛細(xì)管柱
Supelco(色譜科)位于美國賓夕法尼亞州,是Sigma-Aldrich集團(tuán)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

Astec CHIRALDEX G-DA SUPELCO 手性氣相色譜柱 毛細(xì)管柱
 

  • CD Type: γ (gamma)
  • Derivative: Dialkyl
  • Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)

    Incorporates a phase consisting of a 2,6-di-O-pentyl-3-methoxy derivative of γ-cyclodextrin. This phase is good for separations of heterocyclic amines. It has different selectivity from other phases and often shows reversal in elution from the PH phases.

    The dipentylated derivatives of alpha, beta and gamma cyclodextrin show pronounced selectivity differences based on the size, shape and functionality of the analyte. Strong evidence exists for inclusion complexation which is the basic driving mechanism and, therefore, resolution is affected by sample load. The beta-cyclodextrin form has the broadest applicability. Sample volumes under 1 microliter at concentrations of 5 mg/mL are typical with the 100/1 split ratio.

Features: 

  • Hydrophobic surfacePronounced selectivity
  • differences based on analyte size, shape and functionality
  • Separates heterocyclic amines
  • Different selectivity from other cyclodextrin derivatives
  • Often shows reversal in elution order from PH series

Selectivity priorities:

  • Alpha…Simple epoxides, cyclic ethers, linear substituted alkanes
  • Beta…Heterocyclic amines
  • Gamma…Naphthyl analogs

Mechanism Observations:

    Stronger inclusion for DA and, therefore, size selectivity is important. Critical temperature dependence for enantioselectivity. Above this temperature no separation occurs.

 

Astec CHIRALDEX G-DA SUPELCO 手性氣相色譜柱 毛細(xì)管柱

訂貨信息:

Product #Description
72033ASTAstec? CHIRALDEX? G-DA 毛細(xì)管氣相色譜柱 L × I.D. 30m × 0.25 mm, df 0.12 μm

 

Astec CHIRALDEX G-DA

訂購:

上海屹利科學(xué)儀器有限公司  www.elab17。。cn   

上海屹利科學(xué)儀器有限公司(杭州辦)   

會(huì)員登錄

×

請輸入賬號

請輸入密碼

=

請輸驗(yàn)證碼

收藏該商鋪

X
該信息已收藏!
標(biāo)簽:
保存成功

(空格分隔,最多3個(gè),單個(gè)標(biāo)簽最多10個(gè)字符)

常用:

提示

X
您的留言已提交成功!我們將在第一時(shí)間回復(fù)您~
撥打電話
在線留言
龙岩市| 三门峡市| 扶绥县| 和静县| 满洲里市| 哈尔滨市| 嘉善县| 仲巴县| 常熟市| 柯坪县| 荃湾区| 工布江达县| 邵阳市| 瓦房店市| 错那县| 洛川县| 轮台县| 三穗县| 织金县| 曲周县| 金沙县| 开鲁县| 土默特左旗| 中牟县| 兰坪| 南丰县| 裕民县| 凤庆县| 石屏县| 清河县| 灵石县| 高雄县| 太康县| 观塘区| 江源县| 江城| 台前县| 崇明县| 藁城市| 始兴县| 阿克陶县|