High-performance liquid chromatographic analysis of the (cyanoaquo) stereoisomers of several putative vitamin B12 precursors.
High-performance liquid chromatographic analysis of the (cyanoaquo) stereoisomers of several putative vitamin B12 precursors.
复制标题
对几种假定的维生素 B12 前体的 (cyanoaquo) 立体异构体进行高效液相色谱分析。
DOI:
10.1016/s0021-9673(01)88897-x
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Shambee,M
中科院分区:
文献类型:
--
作者:
Ford,SH;Gallery,J;Nichols,A;Shambee,M
The cyanoaquo and aquocyano stereoisomers of several putative vitamin B12precursors are reversibly formed and can be separated using analytical high-performance liquid chromatographic methods. The behavior of these stereoisomers varies somewhat depending on the type of column used and the chromatographic conditions employed. Both reversed-phase and ion-exchange columns can be used to observe the reversible formation and separation of the stereoisomers of (H2O,CN)cobyric acid, cobinamide and the cobinic acid pentaamide-1, -2 and -3 structural isomers. The greatest differences in retention times are seen when the pH of the eluting buffer is less than 4.0 and the buffer contains no KCN.
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