Bis-(Aminooxy)-PEG(Aminooxy-PEG-Aminooxy) is a type of molecule that contains two aminooxy functional groups connected by a polyethylene glycol (PEG) linker. The aminooxy functional group (-ONH2) is a versatile chemical moiety that can react with a wide range of other functional groups, such as carbonyl, carboxyl, and aldehyde groups. This makes Aminooxy-PEG-Aminooxy a valuable tool in pharmaceutical research and development, as it can be used to modify and functionalize drug molecules, peptides, and proteins. For example, Aminooxy-PEG-Aminooxy can be used to conjugate drugs to targeted delivery vehicles or to introduce imaging agents into diagnostic compounds.