2,6-Piperazinedione, 4,4'-(1-ethyl-2-methyl-1,2-ethanediyl)bis-, (R*,S*)-(.+-.)- 2,6-Piperazinedione, 4,4'-(1-ethyl-2-methyl-1,2-ethanediyl)bis-, (R*,S*)-(PM)- 36753-17-0 ICRF 202 NSC218457