N-[6-[(Aminoiminomethyl)amino]hexyl]-N'-(4-chlorophenyl)imidodicarbonimidic-d4 N7,N8-Diboc Diamide is an intermediate in the synthesis of Chlorhexidine Digluconate Impurity N-d4 Hydrochloride (C377662). Chlorhexidine Digluconate Impurity N-d4 Hydrochloride, is labelled Chlorhexidine Digluconate Impurity N (C377660), which is a degradation product found in chlorhexidine digluconate solution.