4-Chloro-N,N-dimethyl-2-butanamine Hydrochloride-d6 is the isotope labelled analog of 4-Chloro-N,N-dimethyl-2-butanamine Hydrochloride (C367580); a reagent in the S-alkylation of thioureas to isothioureas which exhibit inotropic acitvity. Also used as a reagent in the synthesis of biphenyloxyalkylamines which can inhibit ADP-induced platelet aggregation in vitro.