(4-Chlorobenzylidene)acetone (p-Chlorobenzylidene)acetone 3-Buten-2-one, 4-(4-chlorophenyl)- 3-Buten-2-one, 4-(p-chlorophenyl)- 3160-40-5 4-Chlorobenzalacetone NSC87353 p-Chlorobenzylidene acetone