DSPE-PEG-OH (MW 6000) is a hydroxy-terminated phospholipid PEG polymer. The hydrophobic tails that allows the encapsulation and aggregation of other hydrophobic drugs, and the hydroxy-terminated can be further reacted. DSPE-PEG-OH (MW 6000) can prepare liposomes or lipid nanoparticles, which can be used in drug delivery and promoting drug absorption research.