2-Diethylaminomethyl-4-diethyl-4H-1,3-benzoxazine hydrochloride 4H-1,3-BENZOXAZINE-2-METHANAMINE, N,N,4,4-TETRAETHYL-, MONOHYDROCHLORIDE 55709-93-8 N,N,4,4-Tetraethyl-4H-1,3-benzoxazine-2-methanamine hydrochloride