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
以及液相色峰
应的一级质。进行分析归纳,推测霉样品中含有四
、
向异构四和向异构霉杂质组分。
