2,4-Dichlorophenoxyacetic acid (2,4-D) is a synthetic herbicide widely used to control broadleaf weeds in agriculture, forestry, and lawns. It mimics natural plant hormones (auxins), causing uncontrolled growth and ultimately killing target plants. 2,4-D is available in various formulations, including esters, salts, and amines, making it adaptable for different applications. While effective, its environmental impact and potential health risks have led to regulatory scrutiny in some regions.