2-tert-Butylcarboxamideethyliminotetraacetic Acid Tetra tert-Butyl Ester is an intermediate in the synthesis of structural analogues to 2-Aminooxyethyliminodiacetic Acid Hydrochloride (A618600), a bifunctional chelating agent with a hydroxylamino group that can bind with the carbonyl group of biomolecules.