S-triazinyl-2-sulfonylureas are a class of chemical compounds used primarily in agricultural applications for weed control. These compounds feature an aromatic triazine ring and a sulfonylurea moiety, which together provide potent herbicidal activity by inhibiting the enzyme acetolactate synthase (ALS), leading to plant growth inhibition and subsequent death. They are effective against various broadleaf weeds as well as grasses. Common commercial products include Atrazine and S-metolachlor. These compounds are known for their stability, selectivity, and low toxicity towards mammals, making them widely used in agriculture while minimizing environmental impact.