1,5-Diazabicyclo(5.4.0)undec-5-ene 1,8-Diazabicyclo(5.4.0)undec-7-ene 2,3,4,6,7,8,9,10-Octahydropyrimido(1,2-alpha)azepine 31171-04-7 41015-70-7 51301-56-5 6674-22-2 69722-76-5 78995-63-8 83329-50-4 DBU EINECS 229-713-7 NSC 111184 Pyrimido(1,2-a)azepine, 2,3,4,6,7,8,9,10-octahydro-