1-(4-Fluorophenacyl)-4-piperonylpiperazine 2194-75-4 4'-Fluoro-2-(4-piperonyl-piperazin-1-yl)acetophenone 5-23-02-00529 (Beilstein Handbook Reference) ACETOPHENONE, 4'-FLUORO-2-(4-PIPERONYLPIPERAZIN-1-YL)- BRN 0899380