Bis-PEG2-acid (CAS 19364-66-0) is a PEG linker featuring two terminal carboxylic acid groups. These reactive groups form stable amide bonds with primary or secondary amines, making it useful in bioconjugation and drug delivery . The hydrophilic PEG spacer improves solubility in aqueous environments, enhancing the compatibility of conjugates in biological applications.
Polyethylene Glycol PEG Linkers > Bis-PEG-acid > Bis-PEG-acid
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