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.
结果得到金霉样品液相色
以及液相色
峰
应的一级质
。
进行分析归纳,推测金霉
样品中含有四环
、差向异构四环
和差向异构金霉
杂质组分。