3,6-diisopropyl-piperazine-2,5-dione

1-oxido-2,5-di(propan-2-yl)pyrazin-1-ium

3-甲基-2-丁酮

1-azido-3-methylbutan-2-one

trimethyl(3-methylbut-1-en-2-yloxy)silane