2-Butenyldiamine, N,N,N',N'-tetraethyl- 20412-52-6 4-04-00-01388 (Beilstein Handbook Reference) BRN 1705594 N,N,N',N'-Tetraethyl-1,4-diaminobut-2-ene N,N,N',N'-Tetraethyl-2-butene-1,4-diamine