Fluroxypyr

Fluroxypyr (CAS 69377-81-7), also marketed under the trade name Advance, is a selective systemic herbicide belonging to the pyridyloxyacetic acid chemical class. It controls broadleaf weeds and woody plants in cereal crops and pastures.

The compound works by mimicking natural plant growth hormones, causing uncontrolled growth and eventual plant death. In cereal production, particularly wheat, barley, and maize, it is formulated into post-emergence herbicides.

These formulations target persistent broadleaf weeds such as cleavers, thistles, and docks. Pasture and rangeland managers use it to suppress invasive woody shrubs and brush species without damaging established grasses.

It is also incorporated into tank-mix herbicide programs alongside active ingredients like MCPA or 2,4-D. This approach broadens the weed control spectrum in a single application pass for agricultural efficiency.

Forestry and rights-of-way maintenance programs rely on it for selective vegetation control. It is particularly valued where long-residual broadleaf suppression is required for land management and safety.

The product is supplied as a technical-grade active ingredient, typically as the free acid or as its meptyl ester salt form. This chemical variation affects the solubility and formulation compatibility of the final product.

Standard commercial concentrations for technical material are typically 95% and above. Formulated products are available as emulsifiable concentrates (EC) and suspension concentrates (SC) for direct field application.