In the course of investigation of N-oxides of nitrogen mustard, 2, 2-bis (2-chloroethyl)- isoxazolidinium chloride was expectedly obtained by oxidation of N, N-bis (2-chloroethyl)-3- chloropropylamine with peracid. This compound drew interest of the present authors because it was found to be readily reduced by catalytic reduction to 3-bis (2-chloroethyl)- amino-1-propanol, which is one of the active bifunctional alkylating agents. As 2- ...