Description

H-Arg-Arg-Trp-Cys-Tyr-Arg-Lys-Cys-Tyr-Lys-Gly-Tyr-Cys-Tyr-Arg-Lys-Cys-Arg-Nh2 is a synthetic peptide with a complex, cysteine-rich sequence, designed for advanced research and development applications. This compound is valued for its potential role in studying protein-protein interactions, enzyme inhibition, and as a scaffold in bioconjugation chemistry due to its specific amino acid arrangement. It is primarily utilized by pharmaceutical R&D laboratories, biotechnology companies, and academic research institutions focused on peptide therapeutics, diagnostic tools, and biochemical probes.

Application

• Pharmaceutical Research: Investigated as a potential lead compound or active pharmaceutical ingredient (API) in drug discovery programs.
• Biochemical Probes: Used to study receptor-ligand binding, signal transduction pathways, and enzyme mechanisms.
• Bioconjugation & Labeling: Serves as a versatile scaffold for attaching fluorophores, biotin, or other tags via its cysteine residues for imaging and detection assays.
• Antimicrobial Peptide (AMP) Studies: Evaluated for potential antimicrobial or antiviral activity given its arginine and lysine-rich, cationic nature.
• Peptide Library Synthesis: A component in specialized peptide libraries for high-throughput screening against biological targets.
• Standards & References: Acts as a high-purity analytical standard for mass spectrometry (MS) and chromatography in quality control laboratories.

Basic Information

Item	Detail
Product Name	H-Arg-Arg-Trp-Cys-Tyr-Arg-Lys-Cys-Tyr-Lys-Gly-Tyr-Cys-Tyr-Arg-Lys-Cys-Arg-Nh2
CAS No.	147658-54-6
Molecular Formula	C136H214N52O26S4
Molecular Weight	3129.8 g/mol
Synonyms	Arg-Arg-Trp-Cys-Tyr-Arg-Lys-Cys-Tyr-Lys-Gly-Tyr-Cys-Tyr-Arg-Lys-Cys-Arg-amide; Cyclic Peptide R18; Cysteine-rich Peptide R18; H-Arg-Arg-Trp-Cys-Tyr-Arg-Lys-Cys-Tyr-Lys-Gly-Tyr-Cys-Tyr-Arg-Lys-Cys-Arg-amide; R18 Peptide; [Cys3,11, Tyr4,9,12,15, Arg1,2,6,16,18, Lys7,10,13, Trp3, Gly11]-Octadecapeptide amide
EINECS	Contact for details

Quality Control

Our peptide products are manufactured under strict quality management systems. Each batch of H-Arg-Arg-Trp-Cys-Tyr-Arg-Lys-Cys-Tyr-Lys-Gly-Tyr-Cys-Tyr-Arg-Lys-Cys-Arg-Nh2 undergoes comprehensive analytical testing, including HPLC for purity, MS for identity confirmation, and amino acid analysis (AAA). Certificates of Analysis (COA) detailing all specifications are provided to ensure traceability and compliance with your research or development requirements.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store desiccated at -20°C or below. This product is hygroscopic (moisture-sensitive). Allow the vial to equilibrate to room temperature in a desiccator before opening to prevent condensation and moisture uptake.

Specification

Item	Specification
Appearance	White to off-white lyophilized powder
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Assay (Peptide Content)	≥ 80.0%
Single Impurity (HPLC)	≤ 1.0%
Amino Acid Analysis	Within ± 10% of theoretical
Water Content (KF)	≤ 5.0%
Acetate Content (HPIC)	≤ 10.0%

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