Dimethyl-(2-piperazin-1-yl-ethyl)-amine1-(2-Dimethylaminoethyl)piperazine 97%N,N-Dimethyl-2-(piperazin-1-yl)ethylamine1-[2-(Dimethylamino)ethyl]piperazine1-[2-(二甲氨基)乙基]哌嗪N,N-二甲基-1-哌嗪基乙胺N,N-Dimethyl-2-piperazinoethylamineN,N-二甲基-2-哌嗪基乙胺N,N-Dimethyl-1-piperazineethanamine