Methods:The extracted mixture of Veronicastrum caulopterum(Hance)Yamazaki from petroleum ether,purified water and 95% ethanol were studied by test tube method.

• 方法:采用试管法,对四方麻的石油醚、水、95%25乙醇提取物进行研究,通过多种指示剂和显色剂的沉淀反应或颜色反应,初步推断四方麻中可能含有的化学成分。