N,N,N',N'-Tetramethylbut-2-ynylenediamine, 1,4-Bis(dimethylamino)-2-butyne, bis(dimethylamino)-2-butyne, EINECS 203-880-6, 1,4-bis(dimethylamino)butyne-2, tetra-N-methyl-but-2-ynediyldiamine, 1,4-bis(dimethylamino)but-2-yne, 1,4-Bis(dimethylamino)butin-2, 2-Butyne-1,4-diamine,N,N,N',N'-tetramethyl