n,n’-diethyl-2-butyne-4-diamine

N,N'-diethylbut-2-ynylenediamine

N,N'-DIETHYL-2-BUTYNE-1,4-DIAMINE

N,N'-diethylbut-2-yne-1,4-diamine

ethyl-[4-(ethylamino)but-2-ynyl]amine