1-Imidazolidineacetamide, 2,5-dioxo-4-ethyl-N-hydroxy-4-phenyl- 2,5-Dioxo-4-ethyl-N-hydroxy-4-phenyl-1-imidazolidineacetamide 3-(5-Ethyl-5-phenyl-hydantoinyl)-acetohydroxamic acid 65050-98-8 CRL 40,450