Description

Bis-Peg6-Acid CAS NO 119189-70-7 is a high-purity, bifunctional polyethylene glycol (PEG) derivative featuring carboxylic acid end groups. This compound is a critical building block in the synthesis of advanced materials, enabling precise conjugation and functionalization. It is essential for researchers and manufacturers in the pharmaceutical, bioconjugation, and specialty polymer industries who require reliable, high-quality linkers for creating sophisticated drug delivery systems, hydrogels, and surface modifiers.

Application

• Pharmaceutical Linker: A key intermediate for the synthesis of antibody-drug conjugates (ADCs), peptide-drug conjugates, and other biopharmaceuticals.
• Polymer & Material Science: Used as a cross-linking agent or monomer for creating biodegradable hydrogels, smart polymers, and functionalized surfaces.
• Bioconjugation Reagent: Facilitates the covalent attachment of drugs, dyes, or targeting ligands to proteins, antibodies, and nanoparticles.
• Nanotechnology: Employed to modify and stabilize nanoparticles, quantum dots, and liposomes for improved biocompatibility and targeted delivery.
• Diagnostic Reagents: Serves as a spacer arm in the development of immunoassays, biosensors, and diagnostic probes.
• Cosmetic & Personal Care: Acts as a functional ingredient in advanced formulations for controlled release and enhanced skin penetration.

Basic Information

Product Name	Bis-Peg6-Acid
CAS No.	119189-70-7
Molecular Formula	C26H50O15
Molecular Weight	602.67 g/mol
Synonyms	1,11-Bis(carboxymethyl)-3,6,9-trioxaundecane-1,11-dioic acid; α,ω-Bis(carboxy)-hexa(ethylene glycol); Hexaethylene glycol diacetic acid; Bis(carboxymethyl) PEG6; 3,6,9,12,15,18-Hexaoxaeicosanedioic acid; PEG-6 diacid; 2,2'-(Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl) bis(oxy)diacetic acid
EINECS	Contact for details

Quality Control

Our Bis-Peg6-Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and titration, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided and available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at 15-25°C. This product is hygroscopic (moisture-sensitive); keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent degradation.

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.