Bromo-PEG2-CH2CO2tBu is a PEG2 linker with a bromo group and a tert-butyl–protected carboxyl. It supports nucleophilic substitution and controlled deprotection specifically for bioconjugation and drug delivery.
Polyethylene Glycol PEG Linkers > Bromo PEG > Bromo-PEG-CH2CO2tBu
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