3,4-Dibromo-Mal-PEG2-Acid constitutes a PEG linker with a dibromomaleimide group and an acid group. The dibromomaleimide group allows for two points of substitution due to the two bromine atoms. Dibromo-Maleimide is sensitive to high temperature and light. The carboxylic acid can react with primary amines in the presence of coupling agents such as EDC and HATU. The hydrophilic PEG linker increases the water solubility of compounds in aqueous media.
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