Accoding to the results, eugenol was one of the main active component of TW-15 and PW-6. The absorption peak of eugenol in UV is 282nm, and its holding time in HPLC is 10.019min.

• 丁香酚紫外光谱在282nm 处有一最大吸收峰；HPLC 保留时间为10.；019min。