2,4-Imidazolidinedione, 5,5-dimethyl-3-(4-fluorophenyl)- 5,5-Dimethyl-3-(p-fluorophenyl)hydantoin 5-24-05-00356 (Beilstein Handbook Reference) 70974-19-5 BRN 0787511 Hydantoin, 5,5-dimethyl-3-(p-fluorophenyl)-