Bis-Acid PEG

Bis-Acid PEG features terminal carboxylic acid groups at both ends, enabling symmetric crosslinking or molecular bridging. The dual carboxyl groups in Bis-Acid PEG can be activated for simultaneous conjugation with amine-containing molecules. Bis-Acid PEG is widely used as a homobifunctional spacer in hydrogel formation, polymer modification, and biomolecular assembly.