2-Methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate trans-(+)- 28057-48-9 Caswell No. 025A Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, 2-methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl ester, trans-(+)- D-TRANS-ALLETHRIN DL-2-Allyl-4-hydroxy-3-methyl-2-cyclopenten-1-one, d-trans-chrysanthemum monocarboxylic ester EPA Pesticide Chemical Code 004003 d-trans-Chrysanthemic acid of d-allethrone