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
霉素样品液相
图以及液相

对应的一级质
图。对
图进行分析归纳,推测
霉素样品中含有四环素、差

四环素和差


霉素杂质组分。
我们指正。


