Enantiomeric excess is determined by~ 1H NMR spectral analysis using Eu ( hfo)_3 as chiral shift reagent. 用加入手征性位移试剂Eu(hfc)3的~1HNMR谱测定了对映体过量百分数。
The study of the interaction between the enantiomer and chiral shift reagent in the determination of enantiomeric purity& betr method 对映体和手性位移试剂的作用及其纯度测定的~1H-NMR研究&BETR法