Pyrazosulfuron is a selective herbicide belonging to the sulfonylurea class, primarily used for controlling various broadleaf and grassy weeds in crops such as rice and other cereals. Its chemical structure features a pyrazole ring, which contributes to its herbicidal activity by inhibiting the enzyme acetolactate synthase (ALS), crucial for amino acid synthesis in plants. This inhibition disrupts the growth and development of target weeds, leading to their eventual death. Pyrazosulfuron is characterized by its relatively low toxicity to mammals and birds, making it a safer option for agricultural use when applied according to recommended guidelines. It is typically formulated as a water-soluble granule or liquid concentrate, allowing for effective application in various environmental conditions. Additionally, it exhibits good soil mobility, which can enhance its efficacy against weeds. However, like many herbicides, it requires careful management to prevent resistance development in weed populations and to minimize potential environmental impacts.

Pyrazosulfuron

98389-04-9: 1H-Pyrazole-4-carboxylic acid, 5-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-1-methyl-, 5-[(4,6-Dimethoxypyrimidin-2-Ylcarbamoyl)Sulfamoyl]-1-Methylpyrazole-4-Carboxylic Acid, 5-[[[[(4,6-Dimethoxy-2-Pyrimidinyl)Amino]Carbonyl]Amino]Sulfonyl]-1-Methyl-1H-Pyrazole-4-Carboxylic Acid, 5-{[(4,6-dimethoxypyrimidin-2-yl)carbamoyl]sulfamoyl}-1-methyl-1H-pyrazole-4-carboxylic acid, Pyrazosulfuron

Pyrazosulfuron is a herbicide that inhibits the growth of plants by inhibiting protein synthesis. It is most effective on plants with high dry weight and low protein content. Pyrazosulfuron binds to the pyrazole ring, which is an essential component of the plant enzyme acetohydroxyacid synthase (AHAS). This binding prevents the formation of acetohydroxyacid, which is an intermediate in the synthesis of fatty acids and proteins. AHAS acts as a catalyst in converting acetyl-CoA from glycolysis into malonyl-CoA, which is then converted into fatty acids. The inhibition of AHAS leads to a decrease in protein synthesis, leading to plant death.

CAS 98389-04-9: Pyrazosulfuron

Pyrazosulfuron

Ref: 3D-FP148005