Synonyms: Cyclopropanecarboxylicacid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, trans-; (?à)-trans-3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarboxylicacid; (?à)-trans-Cypermethric acid; (?à)-trans-Permethrinic acid;trans-(Dichlorovinyl)dimethylcyclopropanecarboxylic acid;trans-3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylic acid;trans-3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid;trans-DCCA; trans-Permethric acid