Poly(L-aspartic acid) sodium salt, MW 2.8K

• Appearance: White to off-white lyophilized powder
• Solubility: Freely soluble in water
• Key Features:
  • Anionic biodegradable polypeptide with sodium carboxylate side chains; negatively charged in aqueous solution
  • Excellent biocompatibility, low cytotoxicity
  • Abundant reactive carboxylate groups for further chemical modification
  • Tunable molecular weight (2.8 kDa)
• Main Applications:
  • pH-responsive drug delivery carriers
  • Layer-by-layer (LbL) thin film assembly
  • Biomineralization research
  • Hydrogel fabrication and surface functionalization
• Storage: −20 °C, desiccated, avoid repeated freeze-thaw cycles