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。