epimeric

adj.差向异构体的

It elaborates the definitions of epimer and epimerization, states the applications of epimerization in medicine and pesticide,and points out its expansive prospect . 阐述了差向异构体和差向异构化的定义。差向异构化技术在医药和农药中间体中应用广泛,前景广阔。

RESULTS The chlortetracycline's epimer, tetracycline and its epimer, as impurities in chlortetracycline have been determined by the liquid chromatogram and its first order mass spectrum. 结果得到金霉素样品液相色谱图以及液相色谱峰对应的一级质谱图。对谱图进行分析归纳,推测金霉素样品中含有四环素、差向异构四环素和差向异构金霉素杂质组分。

Keywords Luminescent bacterium;Tetracycline;Epimer;Veterinary medicine; 发光菌;四环素;差向异构体;兽药;

The isolation and identification of two new epimer from the mother liquid of testosterone 睾丸素母液中两个新差向异构体的分离与结构鉴定

Isolation and identification of two new epimer from the mother liquid of megestrol acetate 安宫黄体酮母液中两个新化合物的分离与结构鉴定