18:0 mPEG5000 PE ammonium  (Synonyms: DSPE-mPEG5000 ammonium; 1,2-Distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-5000] ammonium)

18:0 mPEG5000 PE (ammonium) is a PEG lipid functional end group used in the synthesis of liposomes (LPs) for the design of conjugated polymeric nanoparticles. Through biotin modification and carboxyl terminus, lipid nanoparticles (LNPs) further coupling with other biomolecules can be achieved. Functionalized nanoparticles can be used for targeted labeling of specific cellular proteins. With streptavidin as a linker, biotinylated PEG lipid-conjugated polymer nanoparticles are able to bind to biotinylated antibodies on cell surface receptors, yielding the utility of fluorescence-based imaging and sensing.

5000(Average)

(C₂H₄O)_nC₄₃H₈₄NO₁₀P.H₃N

474922-77-5

Solid

White to off-white

O=C(NCCOP(O)(OC[C@@H](COC(CCCCCCCCCCCCCCCCC)=O)OC(CCCCCCCCCCCCCCCCC)=O)=O)OCCOC.N.[n]

Room temperature in continental US; may vary elsewhere.

-20°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

• [1]. Cooper A, et al. Osmotic Pressure Enables High-Yield Assembly of Giant Vesicles in Solutions of Physiological Ionic Strengths. Langmuir. 2023 Apr 18;39(15):5579-5590.  [Content Brief]