DSPE‑PEG‑OPSS, MW 3400 is an amphiphilic PEG‑lipid conjugate consisting of a hydrophobic DSPE phospholipid anchor, a 3400‑Da hydrophilic PEG spacer, and a reactive orthopyridyl disulfide (OPSS) group. It inserts into lipid bilayers, provides strong steric stabilization, and enables selective conjugation with thiol‑containing biomolecules via disulfide exchange. Widely used for liposome/LNP surface modification, targeted drug delivery, and redox‑responsive bioconjugation.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
