土卫十二

pyrrolidine dione

peri-naphthindandione; 1-H-phenalene-1,3(2H)-dione

indole-2,3-dione; 2,3-indolinedione; isatin

1H-isoindole-1,3(2H)-dione; phthalimide

phenanthrene dione

17,21-Dimethyl-19-nor-4,9-pregnadiene-3,20-dione

6-Cyano-7-nitroquinoxaline-2,3-dione

2,5-piperazine-dione【有化】