1,4-Bis(1-(2-pyridyl)ethyl)piperazine 5-23-03-00057 (Beilstein Handbook Reference) 6592-02-5 BRN 0622047 Bis-1,4-(alpha-methyl-2-pyridyl)methylpiperazine Piperazine, 1,4-bis(1-(2-pyridyl)ethyl)-