.alpha.-Chloro-3',4'-dihydroxyacetophenone .alpha.-Chloro-3,4-dihydroxyacetophenone 2-Chloro-3',4'-dihydroxyacetophenone 3,4-Dihydroxyphenacyl chloride 99-40-1 Acetophenone, 2-chloro-3',4'-dihydroxy- Ethanone, 2-chloro-1-(3,4-dihydroxyphenyl)- NSC13905