DSPE-pSar-N3 (DSPE-Polysarcosine-Azide)

Price range: $560.00 through $860.00

DSPE-pSar-N3 (DSPE-Polysarcosine-Azide) is an azide-functionalized lipid-polypeptoid conjugate consisting of 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE) linked to polysarcosine and terminated with a reactive azide (N3) group. The polysarcosine segment provides stealth properties and low protein adsorption, while the azide functionality enables efficient click chemistry conjugation. DSPE-pSar-N3 is widely used in liposome engineering, lipid nanoparticle functionalization, targeted drug delivery, molecular imaging, and nanomedicine research.

Product Specifications

Product Name: DSPE-pSar-N3
Full Name: DSPE-Polysarcosine-Azide
Polymer Composition: DSPE-Poly(N-methylglycine)-Azide
Molecular Weight: 1420,  1780,  3560, Custom available
Functional Groups: DSPE, Polysarcosine, N3
Appearance: White to off-white solid
Solubility: Water, PBS, Methanol, DMSO
Storage: -20°C, dry and protected from light
Purity: Typically ≥95%

DSPE-pSar-N3 structure
pSar:                         20       25        50
MW:                         1420      1780   3560

 

Description

General Description

DSPE-pSar-N3 is a functional lipid-polypeptoid conjugate designed for membrane anchoring, nanoparticle stabilization, and click chemistry conjugation. The DSPE lipid anchor readily incorporates into liposomal membranes, lipid nanoparticles (LNPs), and other lipid-based delivery systems, while the polysarcosine chain extends into the aqueous environment, creating a hydrophilic stealth layer that minimizes protein adsorption and nonspecific interactions.

The terminal azide group readily participates in copper-catalyzed azide-alkyne cycloaddition (CuAAC) and strain-promoted azide-alkyne cycloaddition (SPAAC) reactions with alkyne- and DBCO-functionalized molecules. DSPE-pSar-N3 combines the stealth properties of polysarcosine with bioorthogonal click chemistry, making it an attractive alternative to PEGylated lipids for targeted nanomedicine, molecular imaging, and advanced drug delivery applications.

Applications

  • Liposome formulation
  • Lipid nanoparticle (LNP) development
  • Click chemistry conjugation
  • Targeted drug delivery
  • Antibody conjugation
  • Peptide conjugation
  • Protein conjugation
  • Surface modification
  • Molecular imaging
  • Nanomedicine research

Features and Benefits

  • DSPE anchor for membrane incorporation
  • Polysarcosine stealth polymer coating
  • Reactive azide group for click chemistry
  • Compatible with CuAAC and SPAAC reactions
  • Low protein adsorption
  • Low immunogenicity
  • Alternative to PEGylated lipids
  • Improves nanoparticle stability
  • Suitable for liposomes and LNPs
  • Excellent biocompatibility

Additional information

Molecular Weight

1420, 1775, 3550

Package Size

50mg, 100mg