Description

Peg5-(Ch2Co2H)2 CAS NO 77855-75-5 is a bifunctional polyethylene glycol derivative, specifically a pentamer with terminal carboxylic acid groups. This molecular structure makes it a versatile and valuable hydrophilic linker for bioconjugation and polymer chemistry. It is primarily needed by researchers and manufacturers in the pharmaceutical, biotechnology, and advanced materials sectors for creating functionalized surfaces, drug delivery systems, and cross-linked hydrogels.

Application

• Bioconjugation Linker: Used to covalently attach peptides, proteins, or other biomolecules to surfaces, nanoparticles, or other polymers while introducing a hydrophilic PEG spacer.
• Drug Delivery Systems: Serves as a functional component in the synthesis of targeted drug conjugates or as a cross-linking agent for biodegradable hydrogel matrices.
• Surface Functionalization: Employed to modify material surfaces (e.g., gold, silica) with carboxylic acid groups for subsequent immobilization of biomolecules or catalysts.
• Polymer Synthesis: Acts as a difunctional monomer or macro-initiator in the preparation of block copolymers, dendrimers, and other complex polymeric architectures.
• Diagnostic Reagents: Utilized in the development of diagnostic assays and biosensors where stable, non-fouling linkages are required.

Basic Information

Product Name	Peg5-(Ch2Co2H)2
CAS No.	77855-75-5
Molecular Formula	C16H30O11
Molecular Weight	398.41 g/mol
Synonyms	2,2'-(Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl) bis(2-carboxyacetate); PEG-5 diacid; 3,6,9,12,15-Pentaoxaheptadecanedioic acid; α,ω-Bis(carboxymethyl) pentaethylene glycol; 1,11-Dicarboxy-3,6,9-trioxaundecane-1,11-dioic acid (alternative representation); Bis(carboxymethyl) PEG5; Pentaethylene glycol di(glycolic acid)
EINECS	Contact for details

Quality Control

Our Peg5-(Ch2Co2H)2 is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and development. 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, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Acid Value (Titration)	Contact for details

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