4-(3-Azaspiro(5.6)dodec-3-yl)-4'-fluoro-butyrophenone 5-20-04-00448 (Beilstein Handbook Reference) 64-57-3 BRN 1348998 BUTYROPHENONE, 4-(3-AZASPIRO(5.6)DODEC-3-YL)-4'-FLUORO-