10-[3-(Dimethylamino)propyl]-9-methyl-acridinum-d6 Iodide is the isotope labelled analog of 10-[3-(Dimethylamino)propyl]-9-methyl-acridinum Iodide. 10-[3-(Dimethylamino)propyl]-9-methyl-acridinum Iodide is an impurity in the synthesis of Imipramine Hydrochloride (I465980), an antidepressant. It functions as a serotonin reuptake inhibitor due to its structural similarity.