4-Imidazolidinone, 5-(phenylmethylene)-2-thioxo- 5-24-08-00156 (Beilstein Handbook Reference) 5-Benzylidene-2-thioguidanthion 5-Benzylidene-2-thiohydantoin 583-46-0 BRN 0139866 HYDANTOIN, 5-BENZYLIDENE-2-THIO- NSC 684359