1'-Acetylcyclohexanespiro-5'-hydantoin 1'-Methylcarbonylcyclohexanespiro-5'-hydantoin 1,3-Diazaspiro(4.5)decane-2,4-dione, 1-acetyl- 5-24-07-00296 (Beilstein Handbook Reference) 882-52-0 BRN 0792853