Synonyms: Hydantoin,5,5-diphenyl- (8CI); 5,5-Diphenyl-1H-imidazolidine-2,4-dione;5,5-Diphenyl-2,4-imidazolidinedione; 5,5-Diphenylhydantoin; Aleviatin; DPH;Denyl; Di-Hydan; Di-Lan; Dihycon; Dilabid; Dintoina; Diphantoin; Diphedan;Diphenat; Diphenylan; Diphenylhydantoin; Ekko; Hidantal; Hydantol; Lehydan;Lepitoin; NSC 8722; Phenytek; Phenytoin; Phenytoine; Sodanton; Zentropil