1,3-Bis(4-methyl-1-piperazinyl)-1,3-propanedione 1,3-Propanedione, 1,3-bis(4-methyl-1-piperazinyl)- 5-23-01-00101 (Beilstein Handbook Reference) 65235-91-8 BRN 0813725 N,N'-Malonyl-bis-N'-methylpiperazine Piperazine, 1,1'-malonylbis(4-methyl-