2,4-Imidazolidinedione, 5,5'-(dithiobis(methylene))bis(3-phenyl- (9CI) 22131-38-0 4-25-00-00245 (Beilstein Handbook Reference) BRN 0099603 Hydantoin, 3,3'-diphenyl-5,5'-dithiodimethylenedi- Hydantoin, 5,5'-(dithiodimethylene)bis(3-phenyl- Hydantoin, 5,5'-(thiodimethylene)bis(3-phenyl- NSC 405812