Poly-L-lysine hydrobromide (MW 30000-70000)

• CAT Number: I044342
• CAS Number: 25988-63-0
• Molecular Formula: C8H19BrN2O
• Molecular Weight: 30000-70000
• Purity: ≥95%

Poly-L-lysine Hydrobromide (MW 30,000–70,000)（Cat No.:I044342）is a synthetic cationic polymer composed of L-lysine residues, commonly used to enhance cell adhesion in culture systems. The molecular weight range provides an optimal balance between coating stability and biocompatibility, supporting robust attachment of cells such as neurons, fibroblasts, and epithelial cells to glass or plastic surfaces. The hydrobromide form ensures good solubility and consistent application. Beyond cell culture, it is employed in drug delivery, gene transfection, and nanomaterial surface modification due to its strong electrostatic interaction with negatively charged biomolecules and substrates.