L-α-Phosphatidylethanolamine is widely used in pharmaceutical formulations, particularly in liposome-based drug delivery systems. Its ability to fuse with cell membranes enhances the delivery of encapsulated drugs into cells, making it valuable in targeted cancer therapies and gene delivery. It also plays a key role in stabilizing membrane structure in synthetic liposomes, improving their durability and performance in vivo. In research, it serves as a model compound for studying membrane dynamics and lipid-protein interactions. Additionally, due to its natural presence in cell membranes, it is used in cell culture applications and membrane reconstitution studies.