5,7-二氮杂螺[3.4]辛烷-6,8-二酮

2-ethenyl-5,7-diazaspiro[3.4]octane-6,8-dione

5-苄基-4-苯基咪唑烷-2,4-二酮

6-(2-hydroxyethyl)-5-methyl-2-methylsulfanyl-1H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one,3-methylsulfanyl-1H-1,2,4-triazol-5-amine

5-phenyl-5-propylimidazolidine-2,4-dione