H2N-PEG-SH (MW 40000) (Amine-PEG-Thiol (MW 40000)) is a linear heterobifunctional polyethylene glycol derivative that contains both thiol and amine groups. This compound serves as a crucial PEGylated cross-linking or bioconjugation reagent. The thiol or ?SH group selectively reacts with maleimide, OPSS, vinyl sulfone, and surfaces of transition metals (including gold, silver, etc.).
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