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
一级质谱图。谱图进行分析归纳,推测霉样品中含有四环、
向异构四环
向异构霉杂质组分。
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