1,1-Cyclohexanediacetimide (8CI) 1130-32-1 3-AZASPIRO(5,5)UNDECAN-2,4-DIONE 3-Azaspiro(5.5)undecane-2,4-dione 5-21-10-00098 (Beilstein Handbook Reference) BRN 0383782 EINECS 214-459-1 NSC 400093 beta,beta-Pentamethylen-glutarsaeureimid [German]