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液相色及液相色
峰对应的一级质
。对
进行分析归纳,推测金霉素样品中
有
环素、差向异构
环素和差向异构金霉素杂质组分。