Description

Topramezone is a selective, systemic herbicide belonging to the benzoylpyrazole chemical class. It is valued for its post-emergence control of a broad spectrum of broadleaf and grass weeds in major field crops, offering excellent crop safety. This compound is a critical tool for agricultural professionals and formulators seeking effective resistance management solutions. Its unique mode of action inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), disrupting carotenoid biosynthesis in susceptible plants.

Application

• Primary Use in Corn (Maize): Widely applied for post-emergence weed control in field corn, sweet corn, and popcorn, offering excellent tolerance in these crops.
• Selective Weed Management: Effective against key resistant and tough-to-control weeds, including Palmer amaranth, waterhemp, lambsquarters, and velvetleaf.
• Herbicide Formulation: Serves as a key active ingredient in the manufacture of commercial suspension concentrate (SC) and wettable granule (WG) herbicide formulations.
• Tank-Mix Partner: Frequently used in combination with other herbicides, such as atrazine or glyphosate, to broaden the spectrum of control and combat herbicide resistance.
• Turf and Ornamental Use: Employed in professional turf management and certain ornamental settings for selective weed control.
• Industrial Vegetation Management: Utilized in non-crop areas for managing unwanted vegetation.

Basic Information

Product Name	Topramezone
CAS No.	210631-68-8
Molecular Formula	C16H17N3O5S
Molecular Weight	363.39 g/mol
Synonyms	[3-(4,5-Dihydro-3-isoxazolyl)-2-methyl-4-(methylsulfonyl)phenyl](5-hydroxy-1-methyl-1H-pyrazol-4-yl)methanone; Topramezone; BAS 670H; Clio; Impact; Armezon; Pyrasulfotole (related compound); Benzoylpyrazole herbicide; HPPD inhibitor herbicide
EINECS	Contact for details

Quality Control

Our Topramezone technical material is manufactured under a strict quality management system to ensure batch-to-batch consistency and efficacy. Quality is verified through a comprehensive suite of analytical methods including HPLC for assay and impurity profiling. A Certificate of Analysis (COA) detailing purity, related substances, and physical parameters is provided with each shipment, ensuring compliance with FAO/WHO specifications and global agrochemical standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Store separately from food, feed, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to beige crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Moisture (KF)	≤ 1.0%
pH (1% suspension)	5.0 - 8.0

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