3-Maleimidopropanoic Acid PFP Ester (CAS: 138194-55-5) is a thiol-reactive reagent with a maleimide group for thiol conjugation and a PFP ester for amine coupling. Ideal for bioconjugation, protein labeling, cross-linking, and therapeutic development.
Polyethylene Glycol PEG Linkers > Maleimide PEG > Mal-PEG-PFP ester
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