Description

D-Lysine Homopolymer Hydrobromide is a synthetic polypeptide derivative of the essential amino acid L-lysine, where the hydrobromide salt form enhances its stability and solubility. This compound is a critical building block and model system in biochemical research, particularly for studying polycationic interactions, peptide self-assembly, and biomimetic materials. It serves researchers and manufacturers in the fields of pharmaceutical development, biomaterials science, and advanced polymer chemistry, where precise molecular structure and charge characteristics are paramount.

Application

• Biomedical Research: Used as a model cationic polymer for studying cell-polymer interactions, gene delivery mechanisms (polyplex formation), and membrane permeability.
• Biomaterial Fabrication: Serves as a key component in the development of hydrogels, scaffolds for tissue engineering, and controlled-release drug delivery systems due to its biocompatibility and tunable properties.
• Pharmaceutical Intermediate: Acts as a precursor or a functional excipient in the synthesis of more complex peptide-based therapeutics and diagnostic agents.
• Surface Modification Agent: Utilized to create cationic surfaces on materials for applications in biosensors, chromatography, and antimicrobial coatings.
• Polymer Science Studies: Provides a well-defined homopolymer for fundamental research on polypeptide conformation, stability, and degradation kinetics.
• Cosmetic & Personal Care Formulations: Investigated for use in advanced skincare products for its potential film-forming and conditioning properties.

Basic Information

Product Name	D-Lysine Homopolymer Hydrobromide
CAS No.	27964-99-4
Molecular Formula	(C6H14N2O2)n · xHBr
Molecular Weight	Variable (Polymer)
Synonyms	Poly(D-lysine) hydrobromide; PDL-HBr; D-Polylysine HBr; Poly(D-lysine hydrobromide); H-D-Lys-OH Homopolymer Hydrobromide; (D-Lys)n · HBr; Poly-D-lysine HBr salt; Poly-D-lysine · HBr
EINECS	Contact for details

Quality Control

Our D-Lysine Homopolymer Hydrobromide is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in molecular weight distribution, purity, and biological activity. A comprehensive Certificate of Analysis (COA) is provided, detailing specifications for assay, degree of polymerization, bromide content, and absence of key impurities. We support research and GMP-grade requirements with full traceability and documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C for long-term stability. This material is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder or solid
Identification (IR)	Conforms to structure
Assay (Nitrogen Content)	≥ 95.0%
Degree of Polymerization (n)	As specified (e.g., 10-100)
Bromide Content	Consistent with theoretical value
Loss on Drying	≤ 5.0 %
Residue on Ignition	≤ 1.0 %
Heavy Metals	≤ 20 ppm
Biological Activity (if applicable)	Contact for details

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