2H-1,3-Benzothiazine-2,4(3H)-dione, 3-(3-(dimethylamino)propyl)-, hydrochloride 3-(3-(Dimethylamino)propyl)-2H-1,3-benzothiazine-2,4(3H)-dione hydrochloride 3-Dimethylaminopropyl-3,4-dihydro-1,3-benzothiazine-2,4-dione hydrochloride 81735-45-7