DE-444

3,8,13,18-Tetraazaicosane

N1,N14-Diethylhomospermine

N(1),N(14)-bis(ethyl)homospermine

N,N'-Diethyl-5,10-diazatetradecane-1,14-diamine

N,N'-Bis[4-(ethylamino)butyl]tetramethylenediamine