3,6—二氯吡啶甲酸杂质分离及色谱峰纯度分析

摘要

This investigation describes that GPC was used to separate effectively 3, 6 -dichloro -pyridine-2-carboxylic acid, from3, 5,6-trichloro -4-cyano-pyridine -2 -carboxylic , 2-cyano- pyridine and tetrachloro -2- cyano -pyridine , the peak purity of 3, 6 -dichloro -phridine -2 -carboxylic acid was identified by " purity augle " theory.