2-Cyclopentenyl-4-hydroxy-3-methyl-2-cyclopenten-1-one chrysanthemate 3-(2-Cyclopenten-1-yl)-2-methyl-4-oxo-2-cyclopenten-1-yl chrysanthemumate 97-11-0 American cyanamid-43064 BRN 2672684 CYCLOPROPANECARBOXYLIC ACID, 2,2-DIMETHYL-3-(2-METHYLPROPENYL)-, ESTER with 2-(2 Cyclethrin Cyclopentenylrethonyl chrysanthemate Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methylpropenyl)-, ester with 2-(2-cyclopenten-1-yl)-4-hydroxy-3-methyl-2-cyclopenten-1-one Cyklethrin ENT 22,952 Pypyrethrin