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,推测含有四环、差向异构四环和差向异构杂质组分。
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,推测含有四环、差向异构四环和差向异构杂质组分。
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