The compound structure is verified by melting point, IR, NMR, element analysis, mass spectrum and optical rotation.
所得最终产品经熔点、核磁、红外、元素分析、质谱和旋光度分析，证明与预期结构相符。
The molecular structure of optimum products is characterized by using infrared spectrum, NMR and ultimate analysis.
利用红外光谱、元素分析及核磁共振等手段对优化条件下的产物进行了分子结构表征。
By using DSC, IR spectrum, NMR, microcolumn analysis and other methods, the structure of the product is characterized and its properties such as viscosity and saponification degree are determined.
用dsc、红外、核磁共振、微库仑分析法等测试手段对产品的结构进行了表征；还用粘度、醇解度等常规分析方法测定了产品的性能。
应用推荐