Description

Peptide Kpr CAS NO 41961-57-3 is a synthetic peptide building block, specifically a protected lysine derivative, widely used in solid-phase peptide synthesis (SPPS). This compound is critical for researchers and manufacturers requiring high-purity intermediates to ensure the fidelity and yield of complex peptide sequences. It serves as an essential raw material for the pharmaceutical, biotechnology, and life science research sectors, enabling the development of therapeutic peptides, diagnostic agents, and biochemical tools.

Application

• Pharmaceutical Intermediates: Key building block for the synthesis of therapeutic peptides targeting metabolic disorders, oncology, and infectious diseases.
• Bioconjugation & Labeling: Used to introduce functional handles or labels into peptides and proteins for diagnostic and imaging applications.
• Research & Development: Essential reagent in academic and industrial R&D for exploring novel peptide structures and biological activity.
• Cosmeceutical Peptides: Incorporated into the synthesis of bioactive peptides for advanced skincare and anti-aging formulations.
• Antibody-Drug Conjugates (ADCs): Serves as a linker component in the design of targeted cancer therapies.
• Peptide Library Synthesis: Enables the high-throughput production of diverse peptide libraries for screening and drug discovery.

Basic Information

Product Name	Peptide Kpr
CAS No.	41961-57-3
Molecular Formula	C14H28N2O4
Molecular Weight	288.39 g/mol
Synonyms	Fmoc-Lys(Boc)-OH; Nα-Fmoc-Nε-Boc-L-lysine; Fmoc-Lys(Boc)-OH; Fmoc-Lys(Boc)-OH; N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-N6-[(1,1-dimethylethoxy)carbonyl]-L-lysine; Fmoc-Lys(Boc); Boc-Lys(Fmoc)-OH; Fmoc-Lys(Boc)-OH (peptide grade)
EINECS	Contact for details

Quality Control

Our Peptide Kpr is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specifications. Our production adheres to cGMP guidelines where applicable, supporting its use in regulated pharmaceutical development.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. For long-term storage, consider desiccation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥98.5%
Specific Rotation	+14.0° to +16.0° (c=1 in DMF)
Water Content (KF)	≤0.5%
Heavy Metals	≤10 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.