Description

Benzyl ((S)-2-((tert-Butoxycarbonyl)Amino)-4-Phenylbutanoyl)-L-Leucyl-L-Phenylalaninate is a sophisticated, high-purity synthetic peptide derivative designed for advanced research and development. This compound is a critical intermediate in the synthesis of complex peptide-based pharmaceuticals and bioactive molecules, offering precise stereochemical control. It is primarily utilized by pharmaceutical R&D laboratories, biotechnology companies, and academic research institutions focused on drug discovery, particularly in the development of enzyme inhibitors and receptor modulators. Our supply ensures the consistent quality and reliability required for sensitive synthetic pathways.

Application

• Pharmaceutical Intermediate: A key building block in the solid-phase and solution-phase synthesis of novel therapeutic peptides.
• Protease Inhibitor Research: Used in the development and study of inhibitors for enzymes like renin, HIV protease, and other aspartic proteases.
• Chemical Biology Probes: Serves as a precursor for labeled or modified peptides used to study protein-protein interactions and cellular pathways.
• Academic & Institutional R&D: Employed in university and research institute laboratories for methodological studies in organic and medicinal chemistry.
• Process Development: Used in scaling up and optimizing synthetic routes for peptide-based Active Pharmaceutical Ingredients (APIs).

Basic Information

Product Name	Benzyl ((S)-2-((tert-Butoxycarbonyl)Amino)-4-Phenylbutanoyl)-L-Leucyl-L-Phenylalaninate
CAS No.	868540-15-2
Molecular Formula	C38H47N3O6
Molecular Weight	641.80 g/mol
Synonyms	Boc-Phe-Leu-Phe-OBzl; Boc-L-Phe-L-Leu-L-Phe-OBzl; tert-Butyloxycarbonyl-Phenylalanyl-Leucyl-Phenylalanine Benzyl Ester; (S)-Benzyl 2-((S)-2-((tert-Butoxycarbonyl)Amino)-4-Phenylbutanamido)-4-Methylpentanoate; N-[(Benzyloxy)carbonyl]-L-phenylalanyl-N-[(1,1-dimethylethoxy)carbonyl]-L-leucyl-L-phenylalanine; Boc-Phe-Leu-Phe-OBzl trifluoroacetate (salt form may vary); Peptide Synthesis Intermediate 868540-15-2
EINECS	Contact for details

Quality Control

Every batch of Benzyl ((S)-2-((tert-Butoxycarbonyl)Amino)-4-Phenylbutanoyl)-L-Leucyl-L-Phenylalaninate is manufactured and tested under strict quality management systems. We provide comprehensive analytical data to support your research and regulatory needs. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

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) and should be handled under dry conditions to prevent degradation. For long-term storage, consider desiccation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Specific Rotation	Contact for details
Water Content (KF)	≤ 1.0%
Residual Solvents (GC)	Complies with ICH guidelines
Heavy Metals	< 20 ppm

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