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.
结果得到金霉液相色
图以及液相色
峰对应的一级质
图。对
图进行分析归纳,推测金霉
中含有四环
、差
四环
和差
金霉
杂质组分。