5,5-diphenylimidazolidine-2,4-dione; 5,5-Diphenyl Hydantoin; 5,5-Diphenyl-2,4-imidazolidinedione; Aleviatin; DPH; Denyl; Di-Hydan; Di-Lan; Dihycon; Dilabid; Dintoina; Diphantoin; Diphedan; Diphenat; Diphenylan; Sodanton; Zentropil; 2,4-Imidazolidinedione, 5,5-diphenyl; 5,5-Diphenylhydantoin (USP)