1-(2-n-Butylamino)ethylamino-4-methylthioxanthenone, hydrochloride 73909-10-1 9H-Thioxanthen-9-one, 1-((2-(butylamino)ethyl)amino)-4-methyl-, hydrochloride Thioxanthen-9-one, 1-(2-butylaminoethylamino)-4-methyl-, hydrochloride