(1S,3R,4R)-Ethyl 3-((tert-Butoxycarbonyl)amino)-4-(2-((5-chloropyridin-2-yl)amino)-2-oxoacetamido)cyclohexanecarboxylate is an intermediate in the synthesis of Edoxaban-d6 (E555522), the isotope labelled analog of Edoxaban (E555520); an anticoagulant drug which acts as a direct factor Xa inhibitor.