Protoescigenin（Cat No.:I014851）is a triterpenoid sapogenin obtained through the hydrolysis of escin, a major bioactive component of Aesculus hippocastanum (horse chestnut). It serves as the aglycone backbone of various saponins, contributing to their pharmacological properties. Protoescigenin has been studied for anti-inflammatory, vasoprotective, and antioxidant activities, making it relevant in cardiovascular and venous insufficiency research. It supports vascular tone, reduces edema, and protects endothelial function. As a key structural unit in natural saponins, protoescigenin is valuable in phytochemistry, pharmacognosy, and therapeutic development targeting vascular and inflammatory disorders.