Description

L-Lysine, O-(phenylMethyl)-L-tyrosyl-L-phenylalanyl-(4R)-4-[[[[2-[[(1,1-diMethylethoxy)carbonyl]aMino]ethyl]aMino]carbonyl]oxy]-L-prolyl-(2S)-2-phenylglycyl-1-[(1,1-diMethylethoxy)carbonyl]-D-tryptophyl-N6-[(1,1-diMethylethoxy)carbonyl]- (9CI) CAS NO 842149-90-0 is a complex, synthetic peptide derivative primarily used as a key intermediate in advanced pharmaceutical research and development. Its intricate structure, featuring multiple protected amino acid residues, makes it a critical building block for the synthesis of novel peptide-based therapeutics and bioactive compounds. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and life sciences sectors focused on developing targeted drug candidates.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the multi-step synthesis of complex peptide drugs and active pharmaceutical ingredients (APIs).
• Peptide-Based Drug Discovery: Used as a specialized building block in medicinal chemistry for constructing novel peptide sequences with potential therapeutic activity.
• Bioconjugation & Probe Development: Acts as a scaffold for creating labeled peptides or conjugates used in diagnostic assays and biochemical research.
• Academic & Contract Research: Employed in university and CRO laboratories for studying peptide structure-activity relationships (SAR) and developing new synthetic methodologies.
• GPCR Ligand Research: Potential use in the development of ligands for G-protein-coupled receptors (GPCRs) due to its peptide nature and specific amino acid sequence.

Basic Information

Product Name	L-Lysine, O-(phenylMethyl)-L-tyrosyl-L-phenylalanyl-(4R)-4-[[[[2-[[(1,1-diMethylethoxy)carbonyl]aMino]ethyl]aMino]carbonyl]oxy]-L-prolyl-(2S)-2-phenylglycyl-1-[(1,1-diMethylethoxy)carbonyl]-D-tryptophyl-N6-[(1,1-diMethylethoxy)carbonyl]- (9CI)
CAS No.	842149-90-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Boc-Lys(Boc)-D-Trp(Boc)-Pro(OSu)-Phe-Tyr(OBzl)-OH (protected peptide sequence); (9CI) Designated Peptide; 842149-90-0; Boc-Lys(Boc)-D-Trp(Boc)-Pro-OSu-Phe-Tyr(OBzl); N6-[(1,1-Dimethylethoxy)carbonyl]-L-lysine, O-(phenylmethyl)-L-tyrosyl-L-phenylalanyl-(4R)-4-[[[[2-[[(1,1-dimethylethoxy)carbonyl]amino]ethyl]amino]carbonyl]oxy]-L-prolyl-(2S)-2-phenylglycyl-1-[(1,1-dimethylethoxy)carbonyl]-D-tryptophyl-
EINECS	Contact for details

Quality Control

Our L-Lysine, O-(phenylMethyl)-L-tyrosyl-L-phenylalanyl-(4R)-4-[[[[2-[[(1,1-diMethylethoxy)carbonyl]aMino]ethyl]aMino]carbonyl]oxy]-L-prolyl-(2S)-2-phenylglycyl-1-[(1,1-diMethylethoxy)carbonyl]-D-tryptophyl-N6-[(1,1-diMethylethoxy)carbonyl]- (9CI) is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the exacting standards required for pharmaceutical R&D. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting critical parameters such as assay, chiral purity, and solvent residues.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below for long-term stability. This compound is hygroscopic (moisture-sensitive); containers must be kept tightly sealed in a dry environment to prevent degradation. Allow the sealed container to equilibrate to room temperature before opening to minimize moisture ingress.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Chiral Purity	≥ 99.0% ee
Water Content (KF)	≤ 1.0%
Residual Solvents (GC)	Meets ICH Q3C guidelines

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