Description

L-Arginine, L-α-aspartylglycyl-L-isoleucyl-L-tryptophyl-L-lysyl-L-alanyl-L-seryl-L-phenylalanyl-L-threonyl-L-threonyl-L-phenylalanyl-L-threonyl-L-valyl-L-threonyl-L-lysyl-L-tyrosyl-L-tryptophyl-L-phenylalanyl-L-tyrosyl- is a high-purity, synthetic peptide of significant interest in advanced biomedical research and development. This compound, with CAS No. 198270-13-2, is valued for its precise molecular structure and potential as a key intermediate or active ingredient in therapeutic applications. It is primarily sought by pharmaceutical R&D laboratories, biotechnology companies, and academic institutions engaged in peptide-based drug discovery, metabolic studies, and biochemical analysis.

Application

• Pharmaceutical Research & Development: As a critical intermediate or reference standard in the discovery and synthesis of novel peptide-based therapeutics.
• Biochemical Research: For studying enzyme-substrate interactions, receptor binding assays, and metabolic pathway analysis in vitro.
• Proteomics & Molecular Biology: Use as a tool compound for investigating protein folding, stability, and function.
• Standards & Calibration: Serving as a high-purity analytical standard for HPLC, LC-MS, and other chromatographic methods in quality control laboratories.
• Preclinical Studies: Potential use in animal model studies to evaluate pharmacokinetics, efficacy, and safety profiles of peptide candidates.

Basic Information

Item	Details
Product Name	L-Arginine, L-α-aspartylglycyl-L-isoleucyl-L-tryptophyl-L-lysyl-L-alanyl-L-seryl-L-phenylalanyl-L-threonyl-L-threonyl-L-phenylalanyl-L-threonyl-L-valyl-L-threonyl-L-lysyl-L-tyrosyl-L-tryptophyl-L-phenylalanyl-L-tyrosyl-
CAS No.	198270-13-2
Molecular Formula	C140H202N38O36
Molecular Weight	~2985.3 g/mol
Synonyms	Arg-Asp-Gly-Ile-Trp-Lys-Ala-Ser-Phe-Thr-Thr-Phe-Thr-Val-Thr-Lys-Tyr-Trp-Phe-Tyr; Peptide R-20; [Arg1, Asp2, Gly3, Ile4, Trp5, Lys6, Ala7, Ser8, Phe9, Thr10, Thr11, Phe12, Thr13, Val14, Thr15, Lys16, Tyr17, Trp18, Phe19, Tyr20]-Peptide; 20-mer L-Peptide; Custom Synthetic Peptide 198270-13-2
EINECS	Contact for details

Quality Control

Our L-Arginine, L-α-aspartylglycyl-L-isoleucyl-L-tryptophyl-L-lysyl-L-alanyl-L-seryl-L-phenylalanyl-L-threonyl-L-threonyl-L-phenylalanyl-L-threonyl-L-valyl-L-threonyl-L-lysyl-L-tyrosyl-L-tryptophyl-L-phenylalanyl-L-tyrosyl- is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and MS for identity confirmation, to ensure it meets exacting research-grade specifications. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting purity, related substances, and other critical parameters.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a freezer. This product is hygroscopic (moisture-sensitive). For long-term storage, keep desiccated. 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 structure
Purity (HPLC)	≥ 95.0%
Related Substances (HPLC)	Individual impurity ≤ 2.0%; Total impurities ≤ 5.0%
Amino Acid Analysis	Within ± 10% of theoretical
Water Content (KF)	≤ 5.0%
Peptide Content	≥ 80.0%

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