Dimethyl(tetrahydro-3,3-diphenyl-2-furylidene)ammonium Bromide is a useful synthetic intermediate in the synthesis of Loperamide Hydrochloride (L469450); an antidiarrheal. Dimethyl(tetrahydro-3,3-diphenyl-2-furylidene)ammonium Bromide is also used as a reagent in the synthesis of benzomorphan analogs as opioid receptor agonists and/or antagonists.