The effective part of Cortex Moutan was separated by water vapor distillation, and a pure component, having retention characteristic on CMC, was obtained.

• 采用水蒸气蒸馏法分离丹皮有效部位，从中得到某一挥发性成分，经脂肪CMC法再筛选，发现是具有脂肪CMC保留特性的活性成分。