Synonyms: 5,5-Diphenyl-3-(2-propynyl)hydantoin;BRN 0277780;Hydantoin, 5,5-diphenyl-3-(2-propynyl)-;2,4-Imidazolidinedione, 5,5-diphenyl-3-(2-propynyl)-;2718-07-2;AC1L452Y;LS-76166;4-24-00-01750 (Beilstein Handbook Reference);5,5-diphenyl-3-prop-2-ynylimidazolidine-2,4-dione