19967-81-8 3,3'-(1,4-Piperazinediyldimethylene)bis(5-methyl-5-styrylhydantoin) 5-24-08-00208 (Beilstein Handbook Reference) BRN 0874677 Hydantoin, 3,3'-(1,4-piperazinediyldimethylene)bis(5-methyl-5-styryl-