3-(PEG4-Azide)-2-((PEG4-Azide)methyl)propan-1-ol is a trifunctional linker with two azides and a primary alcohol group. The azides are applied in click chemistry with terminal alkynes and strained cyclooctynes like DBCO and BCN while the alcohol can be used in numerous ways such as forming esters with carboxylic acids. The use of a PEG linker provides this molecule with aqueous solubility.
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