Description

Lys-Lys-Lys-Lys-Lys CAS NO 19431-21-1 is a synthetic pentalysine peptide, a high-purity oligomer of the essential amino acid L-lysine. This compound is valued for its strong cationic properties and ability to interact with anionic surfaces, making it a critical intermediate in advanced biochemical research and development. It is primarily utilized by researchers and manufacturers in the pharmaceutical, biotechnology, and life science sectors for applications ranging from peptide synthesis to biomaterial surface modification.

Application

• Bioconjugation & Carrier Systems: Acts as a cationic linker or spacer for attaching drugs, dyes, or other molecules to nanoparticles, proteins, or solid supports.
• Peptide Synthesis & Research: Serves as a key building block (residue) or model compound for studying polylysine structures and developing novel therapeutic peptides.
• Biomaterial & Surface Engineering: Used to modify surfaces to promote cell adhesion or to create non-fouling coatings in medical devices and implants.
• Gene Delivery Research: Investigated as a component in non-viral vectors for nucleic acid (DNA, RNA) delivery due to its ability to condense genetic material.
• Enzyme & Protein Studies: Functions as a substrate or inhibitor in enzymatic assays to study protease (e.g., trypsin) activity and specificity.
• Antimicrobial Peptide (AMP) Research: Studied as a synthetic analog or precursor in the development of new antimicrobial agents.
• Cosmetic & Personal Care Formulations: Explored for use in hair and skin care products for its conditioning and film-forming properties.
• Chromatography & Purification: Can be used as a standard or ligand in affinity chromatography for protein separation.

Basic Information

Product Name	Lys-Lys-Lys-Lys-Lys
CAS No.	19431-21-1
Molecular Formula	C30H60N10O6
Molecular Weight	656.87 g/mol
Synonyms	Pentalysine; (L-Lysine)5; L-Lysyl-L-lysyl-L-lysyl-L-lysyl-L-lysine; Lys5; K5; Poly(L-lysine) pentamer; H-Lys-Lys-Lys-Lys-Lys-OH; Oligo-L-lysine (n=5)
EINECS	Contact for details

Quality Control

Our Lys-Lys-Lys-Lys-Lys is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) with detailed chromatographic data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (refrigerated) or as indicated on the label or COA. This product is hygroscopic (moisture-sensitive). Allow the sealed container to reach ambient temperature before opening to prevent condensation and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/MS)	Conforms
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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