<chemical> An antimitotic antineoplastic agent with immunosuppressive properties. It has also been used to prevent doxorubicin-induced cardiotoxicity. ... Pharmacological action: antineoplastic agent, cardiovascular agents. ... Chemical name: 2,6-Piperazinedione, 4,4'-(1-methyl-1,2-ethanediyl)bis-, (+-)- ... (12 Dec 1998) ...