Description

4-Toluenesulfonyl-Penta(α-Aminoisobutyryl)Methyl Ester CAS NO 69555-87-9 is a specialized, high-purity chemical building block used in advanced organic synthesis. This compound is valued for its role as a protected peptide intermediate, enabling the controlled construction of complex molecular architectures. It is primarily required by research institutions and pharmaceutical development companies working on novel peptide-based therapeutics and bioactive compounds.

Application

• Peptide Synthesis Intermediate: A key protected building block for the solid-phase and solution-phase synthesis of complex peptides and peptidomimetics.
• Pharmaceutical Research & Development: Used in the discovery and development of new active pharmaceutical ingredients (APIs), particularly for metabolic and neurological targets.
• Bioconjugation Chemistry: Serves as a reactive handle for attaching peptides or other functional groups to larger biomolecules, polymers, or surfaces.
• Chemical Biology Probes: Utilized in the creation of labeled or modified peptides for studying protein-protein interactions and cellular pathways.
• Material Science: Potential applications in creating peptide-functionalized materials for specialized coatings or biomedical devices.

Basic Information

Product Name	4-Toluenesulfonyl-Penta(α-Aminoisobutyryl)Methyl Ester
CAS No.	69555-87-9
Molecular Formula	C31H45N5O12S
Molecular Weight	687.78 g/mol
Synonyms	Penta(α-aminoisobutyryl)methyl p-toluenesulfonate; Tosyl-Pent(Aib)-OMe; Methyl Nα-tosyl-penta(2-aminoisobutyrate); 69555-87-9; p-Toluenesulfonic acid, ester with penta(2-aminoisobutyric acid) methyl ester; Protected Aib Pentamer Tosylate; Aib5-OMe.Tos
EINECS	Contact for details

Quality Control

Our production of 4-Toluenesulfonyl-Penta(α-Aminoisobutyryl)Methyl Ester adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity suitable for research and development applications. All products undergo rigorous quality testing, including advanced chromatographic analysis, to ensure compliance with exacting specifications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which may affect stability and performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference
Assay (HPLC)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Water Content (KF)	≤ 1.0%
Residual Solvents (GC)	Meets ICH guidelines

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