Product Description: NH2-PEG4-DOTA is a bifunctional, DOTA-type metal chelator. NH2-PEG4-DOTA can be conjugated with Dextran for quantitative analysis in the presence of a highly luminescent complex. NH2-PEG4-DOTA can also bind to radionuclides to prepare radionuclide drug conjugates (RDCs). RDCs have the ability to specifically target biomolecules and can be used in medical imaging or therapy.