2H-1,3-Benzothiazine-2,4(3H)-dione, 3-(2-(dimethylamino)ethyl)-, hydrochloride 3-(2-(Dimethylamino)ethyl)-2H-1,3-benzothiazine-2,4(3H)-dione hydrochloride 3-Dimethylaminoethyl-3,4-dihydro-1,3-benzothiazine-2,4-dione hydrochloride 81735-44-6