(2-Butynylene)bis(triethylammonium) dichloride 2-Butyne-1,4-bis(triethylammonium chloride) aqueous solution 2-Butyne-1,4-diaminium, N,N,N,N',N',N'-hexaethyl-, dichloride 73680-79-2 Ammonium, (2-butynylene)bis[triethyl-, dichloride NSC191764