11-Ethyl-2,4-diazaspiro(5.5)undec-8-ene-1,3,5-trione 2,4-Diazaspiro(5.5)undec-8-ene-1,3,5-trione, 11-ethyl- 4-24-00-02046 (Beilstein Handbook Reference) 67196-36-5 BRN 0017227