Description

4-Arm Peg-Acrylamide is a multi-functional, star-shaped polymer building block featuring a central core with four polyethylene glycol (PEG) arms, each terminated with a reactive acrylamide group. This unique branched architecture is critical for creating highly cross-linked, biocompatible hydrogel networks with tunable mechanical properties and swelling behavior. It is an essential material for researchers and manufacturers in the biomedical, pharmaceutical, and advanced materials sectors who require precise control over polymer matrix formation for applications such as drug delivery, tissue engineering scaffolds, and diagnostic devices.

Application

• Biomedical Hydrogels: Primary cross-linker for creating injectable or implantable hydrogels for tissue engineering and regenerative medicine.
• Drug Delivery Systems: Used to fabricate controlled-release matrices that can encapsulate and sustainably release therapeutic agents.
• 3D Bioprinting Bioinks: A key component in formulations for printing cell-laden structures due to its rapid, photo-initiated cross-linking capability.
• Diagnostic Assays: Employed in the development of biosensor platforms and microfluidic device coatings to create hydrophilic, protein-resistant surfaces.
• Advanced Material Science: Serves as a versatile macromonomer for synthesizing novel star polymers and polymer networks with specific porosity and functionality.
• Contact Lenses & Medical Devices: Used in the formulation of soft, hydrophilic materials for ophthalmic and other implantable devices.

Basic Information

Product Name	4-Arm Peg-Acrylamide
CAS No.	1818880-26-0
Molecular Formula	Contact for details
Molecular Weight	Variable (based on PEG arm length)
Synonyms	4-Arm PEG-Acrylamide; Tetra-Arm PEG Acrylamide; Four-Arm Polyethylene Glycol Acrylamide; Star-PEG-Acrylamide; Acrylamide-PEG4-tetraol; Multi-Arm PEG Acrylate (common misnomer); Poly(ethylene glycol) tetraacrylate derivative; Tetrabranched PEG-acrylamide
EINECS	Contact for details

Quality Control

Every batch of our 4-Arm Peg-Acrylamide is manufactured and tested under a strict quality management system. We ensure critical parameters such as degree of functionalization, molecular weight distribution, and purity are controlled to meet rigorous R&D and production standards. A comprehensive Certificate of Analysis (COA) detailing purity, NMR characterization, and residual solvent levels is provided with each shipment to guarantee batch-to-batch consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C or as indicated on the label. This product is hygroscopic (moisture-sensitive). Allow the sealed vial to equilibrate to room temperature before opening to minimize moisture uptake. For long-term storage, consider under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95%
Functionalization Degree	≥ 90%
Average Molecular Weight	As per customer grade (e.g., 5k, 10k, 20k Da)
Moisture Content (KF)	≤ 1.0%
Residual Solvent (GC)	Meets ICH guidelines

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