1-((2-(Diethylamino)ethyl)amino)-4-methylthioxanthen-9-one monohydrochloride 1-((2-Diethylaminoethyl)amino)-4-methylthioxanthen-9-one hydrochloride 1-(2-Diethylaminoethylamino)-4-methylthiaxanthone hydrochloride 1-(beta-Diethylaminoethylamino)-4-methylthiaxanthone hydrochloride