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
图以及液
峰对应的一级质
图。对
图进行分析归纳,推测金霉
样品中含有
、差向异构
和差向异构金霉
杂质组分。