18:0 PC (DSPC) A80365 (Previously 850365) 1,2-distearoyl-sn-glycero-3-phosphocholine
1,2-distearoyl-sn-glycero-3-phosphocholine, or 18:0 PC (DSPC), is a fully saturated phospholipid that features two 18-carbon acyl chains. 18:0 PC (DSPC) is a cornerstone in liposomal drug delivery, vaccine formulations, and lipid bilayer research due to its exceptionally high phase transition temperature of around 55°C. Studies show that its stability and low permeability make it an essential lipid for nanoparticle-based therapeutics and controlled-release drug systems.