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tert-Butylchlorodiphenylsilane 4'-(Trifluoromethyl)acetophenone Triphenylmethyl Chloride 4-Fluoroacetophenone CHLOROPHENYLSILANE 4'-Chloroacetophenone 1-(4-CHLORO-2-FLUORO-PHENYL)-2,2,2-TRIFLUORO-ETHANONE 1-(4-CHLOROPHENYL)-2,2,3,3,3-PENTAFLUORO-PROPAN-1-ONE 1-(2,4-DICHLORO-PHENYL)-2,2,2-TRIFLUORO-ETHANONE