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.
结果得到金霉素样品

谱
以及

谱峰
应的一级质谱
。
谱

分析归纳,推测金霉素样品中含有四环素、差向异构四环素和差向异构金霉素杂质组分。

,

中,专家无需事先指定要寻找的
晓

质


