13 c nmr

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1.

The corresponding 13 C NMR resonance peaks are the major basis for the differentiation between treated amber and treated resin .

与之对应的 13CNMR 共振谱峰是判断处理琥珀或处理树脂的重要依据。

2.

Methods LAMS was prepared by chlorosulfonic acid - pyridine method , and the structure of was analyzed by 13 C NMR .

方法利用氯磺酸 -吡啶法对昆布多糖进行硫酸酯化，利用核磁共振碳谱研究其结构。

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3.

It can aid people to elucidate the 13C-NMR spectra of steroidal natural products effectively .

能有效地辅助人们对甾体类天然产物 ~（13 ）C-NMR 图谱的解析。