本文介绍了热分热方法在测定药物纯度判断药物的熔化特性。研究药物结构及剂型选择，测定含水量变化等的应用。
This paper has introduced the thermal analysis methods applied in the determination and study of the purity, melting property, changes of water contents, structures and preparation of drugs.
本产品具有杂质少，纯度高，结构稳定的特点。
This product has little impurity, high purity, fixed construction.
目的：对昆布多糖进行硫酸酯化，并对产物的纯度与结构进行分析，为研究其生物活性奠定物质基础。
Objectives: to sulfate the laminarin, then analyze the purity and elucidate the structure of polysaccharide sulfate, so as to make a foundation for the further research about its biological activity.
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