Description

Cho-Lys-Oh CAS NO 19729-28-3 is a high-purity, protected amino acid derivative, specifically Nα-Carbobenzyloxy-L-lysine. This compound serves as a critical building block in the synthesis of complex peptides and active pharmaceutical ingredients (APIs). It is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and life sciences sectors who require reliable, high-quality intermediates for solid-phase and solution-phase peptide synthesis.

Application

• Pharmaceutical Intermediate: Key raw material for the synthesis of therapeutic peptides and novel drug candidates.
• Bioconjugation: Used in the preparation of antibody-drug conjugates (ADCs) and protein labeling.
• Research & Development: Essential building block in academic and industrial R&D for studying protein structure and function.
• Peptide Library Synthesis: Employed in combinatorial chemistry for generating diverse peptide libraries for screening.
• Cosmetic Peptides: Intermediate in the production of bioactive peptides for advanced skincare formulations.
• Diagnostic Reagents: Component in the manufacture of peptide-based diagnostic assays and biomarkers.

Basic Information

Product Name	Cho-Lys-Oh
CAS No.	19729-28-3
Molecular Formula	C14H20N2O4
Molecular Weight	280.32 g/mol
Synonyms	Nα-Carbobenzyloxy-L-lysine; Z-L-Lys-OH; Cbz-L-Lysine; N6-[(Benzyloxy)carbonyl]-L-lysine; (S)-2-((((Benzyloxy)carbonyl)amino)-6-aminohexanoic acid; Nα-Cbz-L-lysine; CBZ-L-LYSINE; N-Carbobenzyloxy-L-lysine
EINECS	243-287-6

Quality Control

Our Cho-Lys-Oh is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and identity confirmation (IR, NMR) to ensure it meets the stringent requirements for pharmaceutical research and GMP applications. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.5%
Optical Rotation	[α]D20: +15.0° to +18.0° (c=1 in AcOH)
Loss on Drying	≤0.5%
Residue on Ignition	≤0.1%
Heavy Metals	≤10 ppm
Chiral Purity (HPLC)	≥99.0%

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