5-methyl-5-(2-phenylethyl)imidazolidine-2,4-dione

5-but-3-enyl-5-methylimidazolidine-2,4-dione

5,5-二噻吩基-2-咪唑烷-2,4-二酮

2'',3''-二氢-2H,5H-螺[咪唑烷-4,1''-茚]-2,5-二酮

spiro[fluorene-9,5'-imidazolidine]-2',4'-dione