~1H-NMR characteristic spectra of Epimer UDCA CDCA and deterimination the Major composition in bear bile powder has been reported.

• 本文研究了差向异构体熊去氧胆酸和鹅去氧胆酸的~1H-NMR谱学特征。 利用其特征谱峰鉴别熊胆粉中的熊去氧胆酸和鹅去氧胆酸并测定其相对含量。