2,2',4'-Trichloroacetophenone2-chloro-1-(2,4-dichlorophenyl)ethanone2,2',4'-Trichloroacetophenone2,4-Dichlorophenacyl chloride2,4-Dichlorophenacyl chloride2,2′,4′-三氯苯乙酮2,4-二氯苯甲酰基甲基氯2,2′,4′-Trichloroacetophenoneω,2,4-Trichloroacetophenone三氯苯乙酮2,2',4'-三氯苯乙酮alpha,2,4-Trichloroacetophenone2,2',4'-Trichloroacetophenone