mass spectrum

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.

结果得到金霉素相色图以及相色峰对应的一级质图。对图进行分析归纳,推测金霉素中含有四环素、构四环素和构金霉素杂质组分。