Description

4-Arm Poly(Ethylene Glycol) Norbornene Terminated Average Mn 10,000 is a multi-functional, star-shaped polymer featuring a poly(ethylene glycol) core with four reactive norbornene end-groups. This unique architecture is critical for creating highly tunable, cross-linked hydrogel networks via light-initiated thiol-ene or photo-click chemistries. It is an essential building block for researchers and formulators in the biomedical and advanced materials sectors who require precise control over network formation, mechanical properties, and biocompatibility.

Application

• Biomedical Hydrogels: A key precursor for creating injectable, in situ forming hydrogels for tissue engineering scaffolds, wound dressings, and drug delivery systems.
• 3D Bioprinting Bioinks: Serves as a photopolymerizable component in bioinks, enabling the fabrication of complex, cell-laden structures with defined mechanical properties.
• Controlled Release Matrices: Used to engineer degradable networks for the sustained and localized release of therapeutic agents, proteins, or growth factors.
• Advanced Coatings & Adhesives: Employed in the development of biocompatible, cross-linked coatings for medical devices or as surgical sealants.
• Fundamental Polymer Research: A model compound for studying network formation kinetics, structure-property relationships, and novel polymerization mechanisms.

Basic Information

Product Name	4-Arm Poly(Ethylene Glycol) Norbornene Terminated Average Mn 10,000
CAS No.	1191287-92-9
Molecular Formula	Contact for details
Molecular Weight	Average Mn ~10,000 g/mol
Synonyms	4-Arm PEG-Norbornene; Tetra-arm PEG-NB; 4-Arm PEG-NB (Mn 10k); Poly(ethylene glycol) tetranorbornenyl ether; Star-PEG Norbornene; Multi-arm PEG Norbornene Terminated; PEG-tetra-norbornene; Tetrafunctional PEG-Norbornene
EINECS	Contact for details

Quality Control

Every batch of our 4-Arm PEG Norbornene is synthesized and purified under controlled conditions to ensure consistent functionality and performance. Our products undergo rigorous quality testing, including analysis of molecular weight distribution (GPC/SEC), degree of functionalization (NMR), and purity (HPLC). A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with each shipment to support your research and development requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (or as specified on the label) under an inert atmosphere if necessary. This material is hygroscopic (moisture-sensitive). Allow the sealed container to equilibrate to room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white solid or waxy solid
Average Molecular Weight (Mn)	~10,000 g/mol (by GPC/SEC)
Degree of Substitution (Norbornene)	> 95% (by ¹H NMR)
Purity (HPLC)	> 95%
Moisture Content	< 1.0% (by KF Titration)
Solubility	Soluble in water, DCM, DMF, DMSO

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