2,4-Imidazolidinedione, 5-ethyl-3-methyl-5-phenyl-1-(2-propynyl)- 2718-09-4 5-24-08-00094 (Beilstein Handbook Reference) 5-Ethyl-3-methyl-5-phenyl-1-(2-propynyl)hydantoin BRN 0679323 Hydantoin, 5-ethyl-3-methyl-5-phenyl-1-(2-propynyl)-