4-24-00-01490 (Beilstein Handbook Reference) 5-Ethyl-5-phenyl-2,4-dithiohydantoin 5417-76-5 BRN 0182939 Hydantoin, 2,4-dithio-5-ethyl-5-phenyl- Hydantoin, 5-ethyl-5-phenyl-2,4-dithio- NSC 11561 Phenylethyl-5,5 dithio-2,4 hydantoine [French]