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
色
图以及
色
峰对应的一级质
图。对
图进行分析归纳,推测金霉
样
中含有四环
、
异构四环
和
异构金霉
杂质组分。