59042-49-8 Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, (1R,3R)-rel- Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, cis- cis-3-(2,2-Dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid cis-Permethric acid