C18 Sphingomyelin (d18:1/18:0) is widely used in research and biomedical applications due to its role in cell membrane structure and function. It is a key component of lipid rafts, which are essential for cell signaling, membrane trafficking, and protein sorting. This sphingomyelin is often utilized in studies focused on understanding lipid metabolism, membrane dynamics, and cellular communication. Additionally, it is employed in the development of drug delivery systems, particularly liposomes, to enhance stability and targeting efficiency. Its involvement in neurological and metabolic disorders also makes it a valuable compound for investigating disease mechanisms and potential therapeutic interventions.