2-Chloro-1-(4-fluorophenyl)ethanone 2-Chloro-4'-fluoroacetophenone 4-07-00-00642 (Beilstein Handbook Reference) 456-04-2 Acetophenone, 2-chloro-4'-fluoro- BRN 0637860 EINECS 207-256-4 Ethanone, 2-chloro-1-(4-fluorophenyl)- (9CI) alpha-Chloro-4-fluoroacetophenone alpha-Chloro-p-fluoroacetophenone p-Fluorophenacyl chloride