1,4-Butanediaminium, N,N,N,N',N',N'-hexamethyl-, dibromide (9CI) 13440-13-6 AMMONIUM, TETRAMETHYLENEBIS(TRIMETHYL-, DIBROMIDE EINECS 236-578-8 N,N,N,N',N',N'-Hexamethyl-N,N'-butan-1,4-diyldiammonium dibromide Tetramethonium bromide Tetramethonium dibromide Tetramethylenebis(trimethylammonium bromide)