9.以毛細管電泳法分析R及S form的mepivacaine時,於背景電解質溶液0.1 M phosphate buffer(pH 3.0)中添加下列何者可獲得
最好的分離效果?
(A)10 mM SDS
(B)10 mM NaClO4 (C)10 mM dimethyl β-cyclodextrin
(D)10 mM tetrabutylammonium chloride
9.以毛細管電泳法分析光學異構物pilocarpine和isopilocarpine時,下列何種背景電解質溶液可以提供最好的分離
效果?
(A)0.1 M phosphate buffer
(B)0.1 M phosphate buffer containing 0.05 M SDS
(C)0.1 M phosphate buffer containing 0.01 M β-cyclodextrin
(D)0.1 M phosphate buffer containing 10% MeOH
39.當採用毛細管電泳開發dexlansoprazole(R-form)的品管方法,檢驗(S)-lansoprazole含量是否超過標準時,下
列何者最適合做為起始條件?
(A)50 mM phosphoric acid(pH 3),50 mM sodium dodecyl sulfate
(B)50 mM phosphoric acid(pH 3),50 mM β-cyclodextrin
(C)50 mM sodium phosphate,50 mM sodium borate(pH 8)
(D)100 mM Tris-HCl(pH 9)