China is one of the most important centers of diversity for Eriobotrya japonica Lindl. in the world. 3-p-coumaroylquinincacid (3-p-CoQA) was identified and quantified in the peel and pulp of the cultivars tested, this compound possessed relatively higher antioxidant activity, and may be excellent sources of phytochemicals and natural antioxidants.

Escin Ia and isoescin Ia have been traditionally used clinically as the chief active ingredients of escin, a major triterpene saponin isolated from horse chestnut (Aesculus hippocastanum) seeds for the treatment of chronic venous insufficiency, hemorrhoids, inflammation and edema. The interconversion of escin Ia and isoescin Ia when given alone indicates that administration of one isomer leads to exposure to the other.