(2-Pyridyldithio)-PEG4-Acid (CAS: 581065-93-2) is a heterobifunctional linker with a 2-pyridyldithiol group for thiol reactivity and a carboxylic acid for amine coupling. Its PEG4 spacer enhances solubility and flexibility, making it ideal for bioconjugation, drug development, and the synthesis of antibody-drug conjugates (ADCs).
Polyethylene Glycol PEG Linkers > Thiol PEG > Other (2-pyridyldithio)-PEG
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