7-(Bis(2-(tert-butoxy)-2-oxoethyl)amino)-9-(2-(tert-butoxy)-2-oxoethyl)-3-oxo-1-phenyl-2,5-dioxa-4,9-diazaundecan-11-oic Acid 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.