Mal-PEG4-amine TFA salt (CAS: 2221042-92-6) is a versatile linker with a maleimide group for thiol binding, a PEG4 spacer for flexibility, and a terminal amine for conjugation. It’s ideal for bioconjugation, drug delivery, and protein labeling.
Polyethylene Glycol PEG Linkers > Maleimide PEG > Mal-PEG-amine
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