1,2-Diphenyl-2'-(4-methylpiperazinyl)diethylamine 1-(2-(1,2-Diphenylethylamino)ethyl)-4-methylpiperazine 23892-50-4 Diethylamine, 1,2-diphenyl-2'-(4-methylpiperazinyl)- Piperazine, 1-(2-(1,2-diphenylethylamino)ethyl)-4-methyl-