chlortetracycline

1.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.

结果得到霉样品液相色谱图以及液相色谱峰对应的一级质谱图。对谱图进行分析归纳,推测霉样品有四、差向异构四和差向异构霉杂质组分。