Pyrazosulfuron-ethyl

• CAT Number: R069678
• CAS Number: 93697-74-6
• Molecular Formula: C14H18N6O7S
• Molecular Weight: 414.39
• Purity: ≥95%
• Synonyms: ethyl 5-[(4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoyl]-1-methylpyrazole-4-carboxylate
• InChI: InChI=1S/C14H18N6O7S/c1-5-27-12(21)8-7-15-20(2)11(8)28(23,24)19-14(22)18-13-16-9(25-3)6-10(17-13)26-4/h6-7H,5H2,1-4H3,(H2,16,17,18,19,22)
• InChIKey: BGNQYGRXEXDAIQ-UHFFFAOYSA-N
• SMILES: CCOC(=O)C1=C(N(N=C1)C)S(=O)(=O)NC(=O)NC2=NC(=CC(=N2)OC)OC

Pyrazosulfuron-ethyl（Cat No.:R069678）is a selective, systemic sulfonylurea herbicide used primarily in rice cultivation to control broadleaf weeds, sedges, and certain grasses. It acts by inhibiting acetolactate synthase (ALS), a key enzyme in the biosynthesis of branched-chain amino acids, leading to disrupted protein synthesis and plant growth. Applied pre- or early post-emergence, pyrazosulfuron-ethyl is absorbed through roots and leaves and translocated throughout the plant. Its low application rate and high selectivity make it effective with minimal crop injury. It is valued for its long residual activity and environmental compatibility in paddy field management.