Br-PEG-Br

Alpha,omega-bis(bromo) poly(ethylene glycol) (Br-PEG-Br) is a homobifunctional precision PEG derivative with a defined chain length. Both ends bear bromo group groups. Discrete chain lengths with different degrees of polymerization are available. The bromo terminus retains a handle for subsequent nucleophilic substitution, facilitating the introduction of nitrogen- or sulfur-containing linking moieties. Identical reactive sites at both ends support molecular bridging or derivatization on both sides. The conjugation scheme can be designed around the number of target sites.

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