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Ethametsulfuron, also known as DPX-A7881, is a sulfonylurea herbicide used for postemergence control of broadleaf weeds, particularly in crops like spring oilseed rape (Brassica napus L.). Its chemical structure is methyl-2-[(4-ethoxy-6-methylamino-1,3,5-triazin-2-yl)carbamoylsulfonyl] benzoate. The herbicide functions by inhibiting the acetolactate synthase enzyme, which is crucial for the biosynthesis of branched-chain amino acids in plants. Ethametsulfuron exhibits selectivity between different plant species due to variations in the rate of its metabolism, which is a key factor in its effectiveness and safety for use in certain crops. Studies have shown that resistant biotypes of wild mustard can metabolize the herbicide more rapidly, leading to reduced efficacy. Additionally, research into its degradation and leaching in soil has identified major degradation products and proposed metabolic pathways, highlighting its environmental impact and persistence.
仅用于科研。不用于诊断过程。未经明确授权不得转售。