2H-Pyrido(3,2-b)-1,4-oxazine, 3,4-dihydro-4-(2-(dimethylamino)ethyl)-2-ethyl-, trihydrochloride 3,4-Dihydro-4-(2-(dimethylamino)ethyl)-2-ethyl-2H-pyrido(3,2-b)(1,4)oxazine 86979-88-6