Azido-PEG2-C2-amine (CAS No 166388-57-4) is a compound utilized in the field of chemical biology and drug development Originating from the synthesis of polyethylene glycol derivatives it plays an important role in bioconjugation linking bioactive molecules through azide-alkyne click chemistry This mechanism allows for efficient covalent attachment of probes or therapeutics to biological targets In vitro it demonstrates activity within the nanomolar to low micromolar range fostering its use in a variety of experimental settings Common applications involve the use of cell models for studying drug delivery systems and metabolic pathways as well as in animal studies to explore pharmacokinetics Its involvement in drug screening assays makes it valuable for identifying potential therapeutic candidates Experimental concentrations typically depend on the specific research design allowing for tailored approaches in diverse biomedical investigations