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
霉素样品液相色
以及液相色峰对应的一级
。对进行分析归纳,推测霉素样品中含有四环素、差
四环素和差霉素杂组分。
我们指正。
