5-[(3-nitrophenyl)methylidene]imidazolidine-2,4-dione

5-propan-2-ylideneimidazolidine-2,4-dione

5-cyclohexylideneimidazolidine-2,4-dione

[2-(aminomethyl)-4-tert-butyl-6-iodophenyl] hydrogen sulfate

5-(furan-2-ylmethylidene)imidazolidine-2,4-dione