Description

Mefenpyr CAS NO 135591-00-3 is a safener compound widely used in modern agriculture to protect cereal crops from herbicide injury. Its primary value lies in enhancing the selectivity and safety of post-emergence herbicides, particularly sulfonylureas, allowing for effective weed control without damaging the valuable crop. This product is essential for agrochemical formulators and producers developing advanced herbicide mixtures for crops like wheat, barley, and rye.

Application

• As a key safener component in herbicide formulations for cereals.
• To protect wheat and barley crops from phytotoxicity caused by sulfonylurea herbicides.
• Enhancing the crop safety profile of post-emergence weed control programs.
• Used in the development of combination products with herbicides like iodosulfuron and mesosulfuron.
• Improving the margin of selectivity in integrated pest management (IPM) systems.
• Application in agricultural research for developing new, safer agrochemical solutions.

Basic Information

Product Name	Mefenpyr
CAS No.	135591-00-3
Molecular Formula	C16H18Cl2N2O3
Molecular Weight	357.23 g/mol
Synonyms	Mefenpyr-diethyl; 1-(2,4-Dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid, diethyl ester; AE F107892; Hoe 107892; Ethyl 1-(2,4-dichlorophenyl)-5-methyl-1H-pyrazole-3,5-dicarboxylate; Mefenpyr-diethyl safener
EINECS	Contact for details

Quality Control

Our Mefenpyr is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to meet the exacting standards required for agrochemical active ingredient manufacturing. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and related substances 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 a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. The container should be kept tightly closed when not in use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.