本文研究游离胆汁酸及其丁二酸衍生物的快速原子轰击（FAB）质谱。

The fast atom bombardment (FAB) mass spectra of free bile acids and their succinyl derivatives are described.

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目的：比较牛磺结合胆汁酸与其相应的游离胆汁酸镇咳、祛痰、抗炎活性方面的差异。

AIM: to compare the difference in antitussive, expectorant and anti inflammatory activities of tauro conjugated bile acids and the corresponding free ones.

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