Description

Phenylalanyl-Leucyl-Arginyl-Phenylalanine CAS NO 122075-70-1 is a synthetic tetrapeptide composed of phenylalanine, leucine, arginine, and phenylalanine residues. This sequence-specific peptide is of significant interest for its potential role in biochemical research and as a building block for more complex peptide structures. It serves as a critical intermediate for researchers and manufacturers in the pharmaceutical and life science sectors. The compound is valued for its defined structure, which is essential for studies in enzymology, signal transduction, and drug discovery.

Application

• Pharmaceutical Research & Development: As a key intermediate in the synthesis of novel therapeutic peptides targeting specific biological pathways.
• Biochemical Reagent: Used in enzymatic studies, substrate specificity assays, and as a standard in analytical method development.
• Cosmeceutical Applications: Potential incorporation into advanced skincare formulations for its peptide-based activity, subject to further efficacy and safety validation.
• Academic Research: A tool for studying peptide structure-activity relationships, protein-protein interactions, and metabolic processes in laboratory settings.
• Peptide Library Synthesis: Serves as a defined sequence component for constructing combinatorial peptide libraries used in high-throughput screening.

Basic Information

Product Name	Phenylalanyl-Leucyl-Arginyl-Phenylalanine
CAS No.	122075-70-1
Molecular Formula	C30H43N9O5
Molecular Weight	609.73 g/mol
Synonyms	Phe-Leu-Arg-Phe; FLRF; H-Phe-Leu-Arg-Phe-OH; Phenylalanine-Leucine-Arginine-Phenylalanine; Tetrapeptide FLRF; Argireline Precursor; Acetyl Hexapeptide-3 Fragment; Neuropeptide FMRFamide-related peptide analog
EINECS	Contact for details

Quality Control

Our Phenylalanyl-Leucyl-Arginyl-Phenylalanine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, mass spectrometry for identity confirmation, and residual solvent analysis. We provide Certificates of Analysis (COA) with each shipment, detailing all specified parameters 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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to minimize exposure to atmospheric humidity. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/MS)	Conforms to reference standard
Assay (HPLC)	≥ 95.0%
Purity (HPLC, Total Peptide Content)	≥ 98.0%
Single Impurity (HPLC)	≤ 1.0%
Water Content (KF)	≤ 5.0%
Residual Solvents (GC)	Meets ICH guidelines
Amino Acid Analysis	Within ± 10% of theoretical

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