Einecs 260-407-6;Permethrin Impurity H;Permethrin Impurity 8(Permethrin EP Impurity H);Permethrin EP Impurity H (Mixture of Diastereomers);3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic anhydride;Permethrin EP Impurity H (DCVC Anhydride)(Mixture of Diastereomers);Bis[3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic]anhydride;3-(2,2-Dichloroethenyl)-2,2-diMethyl-cyclopropanecarboxylic Acid Anhydride;Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, anhydride (9CI);3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic anhydride (Permethrin Impurity)