Description

L-Cys(1)-L-Ser-L-Cys(2)-L-Asn-L-Ser-L-Trp-L-Leu-L-Asp-L-Lys-L-Glu-L-Cys(2)-L-Val-L-Tyr-L-Phe-L-Cys(1)-L-His-L-Leu-L-Asp-L-Ile-L-Ile-L-Trp-Oh CAS NO 138863-63-5 is a synthetic, high-purity peptide with a specific, complex sequence designed for advanced research and development applications. This compound is critical for scientists requiring precise molecular tools to study protein-protein interactions, receptor binding, and signal transduction pathways. It is primarily utilized by the pharmaceutical, biotechnology, and life science research sectors for drug discovery, biochemical assay development, and as a reference standard.

Application

• Pharmaceutical Research & Drug Discovery: Used as a key intermediate or reference compound in the development of peptide-based therapeutics targeting specific biological pathways.
• Biochemical Assay Development: Serves as a critical reagent or standard in assays designed to study enzyme activity, receptor-ligand binding, and cellular signaling mechanisms.
• Life Science Research: Employed in academic and industrial laboratories for fundamental research in proteomics, structural biology, and molecular pharmacology.
• Reference Standard: Provides a high-purity benchmark for quality control, method validation, and analytical testing in peptide synthesis and characterization.
• Peptide Library Construction: Can be used as a component in the synthesis of specialized peptide libraries for high-throughput screening.

Basic Information

Product Name	L-Cys(1)-L-Ser-L-Cys(2)-L-Asn-L-Ser-L-Trp-L-Leu-L-Asp-L-Lys-L-Glu-L-Cys(2)-L-Val-L-Tyr-L-Phe-L-Cys(1)-L-His-L-Leu-L-Asp-L-Ile-L-Ile-L-Trp-Oh
CAS No.	138863-63-5
Molecular Formula	C128H185N33O34S3
Molecular Weight	2849.3 g/mol (theoretical)
Synonyms	CAS 138863-63-5; Cys-Ser-Cys-Asn-Ser-Trp-Leu-Asp-Lys-Glu-Cys-Val-Tyr-Phe-Cys-His-Leu-Asp-Ile-Ile-Trp-OH; 22-mer peptide; Cys1-Ser-Cys2-Asn-Ser-Trp-Leu-Asp-Lys-Glu-Cys2-Val-Tyr-Phe-Cys1-His-Leu-Asp-Ile-Ile-Trp; Synthetic peptide 138863-63-5; H-Cys-Ser-Cys-Asn-Ser-Trp-Leu-Asp-Lys-Glu-Cys-Val-Tyr-Phe-Cys-His-Leu-Asp-Ile-Ile-Trp-OH; [Cys1, Cys2, Cys11, Cys15]-peptide sequence
EINECS	Contact for details

Quality Control

Our L-Cys(1)-L-Ser-L-Cys(2)-L-Asn-L-Ser-L-Trp-L-Leu-L-Asp-L-Lys-L-Glu-L-Cys(2)-L-Val-L-Tyr-L-Phe-L-Cys(1)-L-His-L-Leu-L-Asp-L-Ile-L-Ile-L-Trp-Oh is manufactured under strict quality systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, mass spectrometry (MS) for identity confirmation, and amino acid analysis (AAA). Certificates of Analysis (COA) detailing all specifications and test results are provided to ensure traceability and compliance with your research or development requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a dry environment. This product is hygroscopic (moisture-sensitive). For long-term storage, consider desiccant and under inert atmosphere to maintain stability. Allow the sealed vial to equilibrate to room temperature before opening to minimize moisture condensation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/MS)	Conforms to reference
Purity (HPLC)	≥ 95%
Peptide Content	≥ 80% (by AAA)
Single Impurity (HPLC)	≤ 1.0%
Water Content (KF)	≤ 5.0%
Acetate Content (HPLC/IC)	≤ 10.0%

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