1093-11-4 4-(1-Azaspiro(4.5)dec-1-yl)-4'-fluoro-butyrophenone 5-20-04-00400 (Beilstein Handbook Reference) BRN 1430818 BUTYROPHENONE, 4-(1-AZASPIRO(4.5)DEC-1-YL)-4'-FLUORO-