(2,4-Difluorophenoxy)acetic acid is a synthetic auxin herbicide and a fluorinated analog of 2,4-D, widely used for selective control of broadleaf weeds in agricultural crops, lawns, turf, and non-crop areas. It functions by mimicking plant growth hormones, disrupting normal growth processes in susceptible plants, leading to excessive elongation, tissue proliferation, and eventual death. The fluorine substitutions enhance its chemical stability, soil persistence, and bioavailability, allowing effective weed control at lower application rates with potentially reduced environmental impact compared to chlorinated counterparts. Commonly formulated as esters or salts for foliar and soil applications in cereals, rice paddies, and pasture management. It is also employed in research to develop next-generation herbicides with improved selectivity, efficacy, and safety profiles.