2-Chloro-2,2-difluoro-1-phenylethan-1-one2-Chloro-2,2-difluoroacetophenone 97%CHLORODIFLUOROACETOPHENONE2,2,2-Chlorodifluoroacetophenonealpha-Chloro-alpha,alpha-difluoroacetophenone2-氯-2,2-二氟苯乙酮alpha,alpha-Difluorophenacyl chloride2-Chloro-2,2-difluoroacetophenone