1,3-Propanediamine, N,N''-1,2-ethanediylbis- 1,3-Propanediamine, N,N''-ethylenebis- 1,5,8,12-Tetraazadodecane 10563-26-5 N,N'-Bis(3-aminopropyl)-1,2-diaminoethane N,N'-Bis(3-aminopropyl)ethylenediamine N,N'-Di(3-aminopropyl)-1,2-ethylenediamine NSC180823