trans-Permethrinic acid is a potent insecticide used in the agricultural industry to eliminate unwanted pests from crops. trans-Permethrinic acid is also metabolite of pyrethroid compounds, a group of pesticides that are relatively low toxicity (to organisms that are not intended to be targeted) and biodegradable. Molecular Formula: C8H10Cl2O2 Solubility: Chloroform (Sparingly), Methanol (Slightly) Molecular Weight: 209.07