金霉素

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.

结果得到霉液相色谱图以及液相色谱峰对应的一级质谱图。对谱图进行分析,测霉中含有四环、差向异构四环和差向异构霉杂质组分。