93697-74-6

Basic information

• Product Name: Pyrazosulfuron-ethyl
• Synonyms: SIRIUS(R);SIRIUS;PYRAZOSULFURON-ETHYL;nc-311;5-(4,6-Dimethoxy-2-pyrimidinylaminocarbonylsulfamoyl)-1-methyl-1H-pyrazole-4-carboxylic acid ethyl ester;5-[3-(4,6-Dimethoxy-2-pyrimidinyl)ureidosulfonyl]-1-methyl-1H-pyrazole-4-carboxylic acid ethyl ester;ETHYL5-(4,6-DIMETHOXYPYRIMIDIN-2-YLCARBAMOYLSULFAMOYL)-1-METHYLPYRAZOL-4-CARBOXYLATE;5-[(4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoyl]-1-methyl-pyrazole-4-carboxylic acid ethyl ester
• CAS NO: 93697-74-6
• Molecular Formula: C₁₄H₁₈N₆O₇S
• Molecular Weight: 414.39
• Product Categories: HERBICIDE
• Mol File: 93697-74-6.mol

Chemical Properties

• Melting Point: 180-182°C
• Flash Point: 170 °C
• Appearance: /
• Density: 1.44
• Refractive Index: 1.44
• Storage Temp.: 0-6°C
• Solubility: DMSO (Slightly), Methanol (Slightly, Heated)
• PKA: 12.06±0.70(Predicted)
• CAS DataBase Reference: Pyrazosulfuron-ethyl(CAS DataBase Reference)
• NIST Chemistry Reference: Pyrazosulfuron-ethyl(93697-74-6)
• EPA Substance Registry System: Pyrazosulfuron-ethyl(93697-74-6)

Safety Data

• RTECS: UQ6393970
• Hazardous Substances Data: 93697-74-6(Hazardous Substances Data)

Usage

Uses

Used in Agricultural Industry:
Pyrazosulfuron-ethyl is used as a herbicide for weed control in various vegetables and other crops. It is effective in managing weed growth by preventing the synthesis of essential amino acids, which in turn blocks cell division and leads to the suppression of weeds.
This herbicide is particularly valuable for its ability to target a wide range of weeds, making it a versatile tool for farmers and agricultural professionals seeking to maintain the health and productivity of their crops.

InChI:InChI=1/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)

Upstream product

• 36315-01-2 4,6-dimethoxy-2-aminopyrimidine 
• 88398-82-7 ethyl 5-(chlorosulfonyl)-1-methyl-1H-pyrazole-4-carboxylate 
• 4223-09-0 sulfonyl diisocyanate 

Downstream Products

• 143727-42-8 C₁₃H₁₇N₅O₄ 
• 88398-81-6 ethyl 1-methyl-5-sulfamoyl-1H-pyrazole-4-carboxylate 

Relevant articles and documents

Agrochemical formulations for water surface application

New agrochemical formulations for application to the water of paddy fields, which formulations comprise A) at least one solid core material having an apparent specific density of less than 1 and a particle diameter within the range from about 300 μm to about 1,400 μm, and B) a coating layer comprising at least one biologically active compound, at least one substance having the ability to reduce the interfacial tension between water and air, at least one oily substance and, if appropriate, one or more additives, and the use of such agrochemical formulations for applying biologically active compounds to the water of paddy fields.

Process for preparation of sulfonylurea derivatives and intermediates for the process and process for preparing the same

The present invention relates to a novel process for preparing sulfonylurea derivatives of formula (I) in a high purity and a high yield characterized in that a sulfonylchloride of formula (V) is reacted with 2-amino-4,6-dimethoxypyrimidine of formula (VII) in the presence of a metal cyanate and an organic base catalyst or a compound of formula (VIII) is reacted with 2-amino-4,6-dimethoxypyrimidine of formula (VII): STR1 wherein R1 represents hydrogen, C1 -C4 alkyl or phenyl, R2 represents hydrogen, C1 -C4 alkyl, allyl or propargyl and R3 represents hydrogen, methyl, ethyl or phenyl, and to a process for preparing the sulfonylchloride compound of formula (V) above and the compound of formula (VIII) above, both of which are useful as an intermediate compound for preparing the sulfonylurea derivative of formula (I) and to a novel intermediate compound of formula (VIII) as defined above.

Herbicide antidotes as safeners for reducing phytotoxicity resulting from synergistic interaction between herbicides and other pesticides

The disclosure herein relates to means for combatting the adverse phytotoxic action to crops arising from the interaction of various herbicidal compounds and biocidal compounds, e.g., insecticidal and/or fungicidal compounds. The means employed to reduce said interaction involves the safening action of various antidotal compounds.

Process for the preparation of sulfonylurea derivatives and intermediates for this process

The present invention relates to a novel process for preparing sulfonylurea derivatives of formula (I) in a high purity and a high yield characterized in that a sulfonylchloride of formula (V) is reacted with 2-amino-4,6-dimethoxypyrimidine of formula (VII) in the presence of a metal cyanate and an organic base catalyst or a compound of formula (VIII) is reacted with 2-amino-4,6-dimethoxypyrimidine of formula (VII): wherein R1 represents hydrogen, C1-C4 alkyl or phenyl, R2 represents hydrogen, C1-C4 alkyl, allyl or propargyl and R3 represents hydrogen, methyl, ethyl or phenyl, and to a process for preparing the sulfonylchloride compound of formula (V) above and the compound of formula (VIII) above, both of which are useful as an intermediate compound for preparing the sulfonylurea derivative of formula (I) and to a novel intermediate compound of formula (VIII) as defined above.

Soybean plants with dominant selectable trait for herbicide resistance

The utilization of a positive selection seed screening process to isolate rate variants with resistance to a herbicide is described. The ability to screen large numbers of mutagenized seed has made it feasible to pursue and isolate plants with low frequency dominant herbicide-resistance mutations. The dominant herbicide resistance mutations are useful for many applications including expanding the utility of sulfonylurea herbicides for soybean weed control, production of F1 and F2 seeds, and as selectable markers for efficient seed purification.

Pyrazolesulfonylurea derivatives, preparation thereof, herbicide containing said derivative as active ingredient and herbicidal method by use thereof

Disclosed is a novel pyrazolesulfonylurea derivative represented by the formula (I), preparation thereof, a herbicide containing said derivative as an active ingredient and a herbicidal method by use thereof. STR1 (wherein A, B, C, D, X, Y and Z are as defined in the specification).

Herbicidal complexes with ureas

Water-soluble complexes, which have herbicidal utility, can be formed from urea and alkali metal salts of selected sulfonylureas, e.g., chlorsulfuron.