Reaction of 1,2-epoxypropane (I) and diethyl amine (II) yields 1-diethylamino-2-propanol (III). 2-Heptyloxyaniline (IV) is reacted with a solution of phosgene in toluene to give 2-heptyloxyphenyliso cyanate (V), which is treated with the aminoalcohol (III) to give title compound.