2,4-Imidazolidinedione, 5-ethyl-5-methyl- 5-Ethyl-5-methylhydantoin 5-Methyl-5-ethylhydantoin 5394-36-5 Hydantoin, 5-ethyl-5-methyl- Methylethylhydantoin NSC1020 T11 WLN: T5MVMV EHJ E2 E1