Description

L-Arg-D-Phe-L-Phe-Gly-L-Phe-L-Ser-D-Phe-L-Phe-L-Arg-Oh is a synthetic nonapeptide with a specific alternating D- and L-amino acid sequence. This compound is of significant interest for advanced research in peptide chemistry, neurobiology, and pharmacology due to its unique structural configuration. It serves as a critical building block and research tool for scientists and manufacturers in the pharmaceutical and biotechnology sectors, particularly for studying peptide stability, receptor interactions, and developing novel therapeutic agents.

Application

• Pharmaceutical Research & Development: As a key intermediate or reference standard in the discovery and development of novel peptide-based therapeutics.
• Biochemical Research: For studying peptide structure-activity relationships (SAR), membrane permeability, and enzymatic stability.
• Neuroscience Studies: Potential use in research related to neuropeptide pathways and receptor binding assays.
• Academic & Institutional Research: Serves as a high-purity chemical for laboratory experiments in universities and research institutes.
• Process Development: Used in scaling up and optimizing synthetic routes for complex peptide manufacturing.
• Quality Control Standard: Acts as an analytical reference standard for HPLC, MS, or NMR in quality assurance laboratories.

Basic Information

Product Name	L-Arg-D-Phe-L-Phe-Gly-L-Phe-L-Ser-D-Phe-L-Phe-L-Arg-Oh
CAS No.	127634-26-8
Molecular Formula	C68H86N18O12
Molecular Weight	1347.5 g/mol (approx.)
Synonyms	Arg-Phe-Phe-Gly-Phe-Ser-Phe-Phe-Arg-OH (Alternate Sequence Notation); Nonapeptide (Arg-D-Phe-L-Phe-Gly-L-Phe-L-Ser-D-Phe-L-Phe-L-Arg); Cyclic Peptide Analog (Potential); H-Arg-D-Phe-L-Phe-Gly-L-Phe-L-Ser-D-Phe-L-Phe-L-Arg-OH; Research Peptide 127634-26-8; Synthetic Neuropeptide Fragment; D/L Alternating Nonapeptide
EINECS	Contact for details

Quality Control

Our L-Arg-D-Phe-L-Phe-Gly-L-Phe-L-Ser-D-Phe-L-Phe-L-Arg-Oh is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, MS for identity confirmation, and chiral analysis to verify the D/L amino acid sequence. Certificates of Analysis (COA) detailing all specifications are provided to ensure traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed in a desiccated environment to prevent degradation. For long-term storage, consider freezing at -20°C under inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/MS)	Conforms to reference standard
Purity (HPLC)	≥ 95.0%
Single Impurity (HPLC)	≤ 1.0%
Amino Acid Analysis	Conforms to theoretical composition
Chiral Purity	Conforms to specified D/L sequence
Water Content (KF)	≤ 5.0%
Residual Solvents (GC)	Meets ICH guidelines

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