Description

Poly(L-Lysine Hydrobromide) is a synthetic, cationic polypeptide derived from the amino acid L-lysine. This compound is valued for its strong positive charge and ability to interact with negatively charged surfaces, making it a versatile biomaterial and research reagent. It is primarily utilized in life science research, pharmaceutical development, and advanced material science. The product is supplied under stringent quality control to ensure batch-to-batch consistency for critical applications.

Application

• Cell Culture & Biomedical Research: Used as a coating agent to promote cell adhesion to culture vessels for various cell lines.
• Drug Delivery Systems: Serves as a component in polyelectrolyte complexes and nanoparticles for controlled release formulations.
• Biomaterial Fabrication: Employed in the layer-by-layer (LbL) assembly of thin films for biosensors, implants, and tissue engineering scaffolds.
• Enzyme Immobilization: Acts as a linker or matrix for immobilizing enzymes and other biomolecules on solid supports.
• Antimicrobial Studies: Investigated for its inherent cationic antimicrobial properties against certain bacteria and fungi.
• Gene Transfection: Explored as a non-viral vector for DNA and siRNA delivery in vitro.

Basic Information

Product Name	Poly(L-Lysine Hydrobromide)
CAS No.	25988-63-0
Molecular Formula	(C6H14N2O2 • HBr)n
Molecular Weight	Varies by degree of polymerization (n)
Synonyms	PLL-HBr; Poly-L-lysine hydrobromide; Poly(lysine) hydrobromide; L-Lysine homopolymer hydrobromide; ε-Polylysine hydrobromide; (S)-Poly(2,6-diaminohexanoic acid) hydrobromide; H-(Lys)n-OH • HBr
EINECS	Contact for details

Quality Control

Our Poly(L-Lysine Hydrobromide) is manufactured under a quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and performance consistency suitable for research and development applications. A comprehensive Certificate of Analysis (COA) detailing specifications such as molecular weight distribution, degree of polymerization, and purity is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C in a dry environment. This material is hygroscopic (moisture-sensitive). Allow the sealed container to reach room temperature before opening to prevent condensation and moisture uptake.

Specification

Item	Specification
Appearance	White to off-white powder or solid
Identification (IR)	Conforms to structure
Assay (Ninhydrin)	≥ 95.0% (as polypeptide)
Molecular Weight (Average)	15,000 - 30,000 Da (or as specified)
Loss on Drying	≤ 5.0 %
Residue on Ignition (Sulfated Ash)	≤ 1.0 %
Bromide Content	Conforms to theoretical value

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.