3-amino-1,2,4,9-tetrahydrocarbazole-3-carboxylic acid

5-(4-溴苯基)-5-甲基咪唑烷-2,4-二酮

5-甲基-5-(4-硝基苯基)-咪唑烷-2,4-二酮

螺[1-氮杂双环[2.2.2]辛烷-8,5'-咪唑烷]-2',4'-二酮

5-methyl-5-propylimidazolidine-2,4-dione