16275-68-6 2-Benzoyl-9H-fluoren-9-one 2-Benzoylfluorenone 3-07-00-04343 (Beilstein Handbook Reference) 9H-Fluoren-9-one, 2-benzoyl- BRN 3326834 Fluoren-9-one, 2-benzoyl- (8CI)