国产真实乱人偷精品视频_男人添女人荫道口视频

🐽 产物列表PRODUCTS LIST

SUPELCO Astec CHIRALDEX G-PN手性气相色谱柱 毛细管柱

扼要描写：

SUPELCO Astec CHIRALDEX G-PN手性气相色谱柱 毛细管柱
Supelco（色谱(pu)(pu)科）位于美(mei)国宾夕法尼亚州(zhou)，是(shi)Sigma-Aldrich团体部属(shu)的(de)子品牌，Supelco一向经(jing)由过程供(gong)给更新的(de)，更靠得住的(de)色谱(pu)(pu)产物(wu)和(he)来赞助色谱(pu)(pu)任务(wu)者(zhe)来处理题目(mu)，其触及的(de)范畴和(he)行业(𝕴ye)有(you)情况、食物(wu)、饮料(liao)、当局、医药、化工等(deng)

在线留言

SUPELCO Astec CHIRALDEX G-PN手性气相色谱柱 毛细管柱
 

  • CD Type: γ (gamma)
  • Derivative: Propionyl
  • Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)
    Astec? CHIRALDEX G-PN incorporates a phase consisting of a 2,6-di-O-pentyl-3-propionyl derivative of γ-cyclodextrin. This phase exhibits high selectivity for lactones and aromatic amines. It is also suitable for epoxide separations. Additionally, the analysis of styrene oxide can be accomplished on this phase (this analyte degrades on the TA phases).

Features: 

  • Suitable for epoxide separations
  • High selectivity for lactones
  • High selectivity for aromatic amines (i.e. amphetamine, methamphetamine)
  • More stable to moisture than the TA phases

Analytes:

Epoxides, aromatic amines (amphetamine/methamphetamine), >C6 alcohols and lactones 

Mechanism Observations:

   There is little evidence of inclusion formation. Retention increases with increased chain length of analyte. This allows for efficient separation of a series of homologs.

Size Selectivity:

   The γ (gamma) form shows a higher degree of selectivity over the beta form for this phase, and very little selectivity based on cavity size. 

SUPELCO Astec CHIRALDEX G-PN手性气相色谱柱 毛细管柱 定货消息：

Product #Description
74033ASTAstec? CHIRALDEX? G-PN 毛细管气相色谱柱 L × I.D. 30m × 0.25 mm, df 0.12 μm