Description

Pyrasulfotole is a selective, systemic herbicide belonging to the chemical class of benzoylpyrazoles. This compound is valued for its post-emergence activity against a broad spectrum of broadleaf weeds, particularly in cereal crops. It is a critical active ingredient for agricultural formulators and producers seeking effective weed management solutions. The product is supplied under the identifier CAS NO 365400-11-9.

Application

Pyrasulfotole is a key component in modern agricultural chemistry, primarily used in the formulation of selective herbicides. Its main applications include:

• Cereal Crop Protection: Post-emergence control of broadleaf weeds in wheat, barley, and other small grains.
• Herbicide Formulations: Used as an active ingredient in combination with other herbicides (e.g., bromoxynil, fluroxypyr) for enhanced efficacy and resistance management.
• Broadleaf Weed Control: Effective against challenging weeds such as cleavers, chickweed, and mayweed.
• Agricultural Research & Development: Serves as a reference standard and intermediate in the synthesis and development of new crop protection agents.

Basic Information

Product Name	Pyrasulfotole
CAS No.	365400-11-9
Molecular Formula	C₁₄H₁₃F₃N₂O₄S
Molecular Weight	362.33 g/mol
Synonyms	Pyrasulfotole; 5-Hydroxy-1,3-dimethyl-4-[(5RS)-3,4,5,6-tetrahydro-2H-pyran-5-ylcarbonyl]pyrazole; 4-[(5RS)-3,4,5,6-Tetrahydro-2H-pyran-5-ylcarbonyl]-1,3-dimethyl-5-hydroxypyrazole; 1,3-Dimethyl-4-(tetrahydro-2H-pyran-5-ylcarbonyl)-5-hydroxypyrazole; Benzoylpyrazole herbicide
EINECS	Contact for details

Quality Control

Our Pyrasulfotole is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet the exacting standards required for agrochemical active ingredients. A Certificate of Analysis (COA) detailing all quality parameters is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.