CAS 100784-20-1 corresponds to Halosulfuron methyl, a selective systemic herbicide of the sulfonylurea class that mainly inhibits acetyl lactate synthase (ALS) and is used to control broadleaf weeds and sedge weeds.

Core Information
-Chinese name: Chlorpyriprone (alias: Chlorpyriprone)
-English name: Halosulfuron methyl
-Molecular formula: C ₁∝ H ₁₅ ClN ₆ O ₇ S
-Molecular weight: 434.81
-Physical and chemical properties: The pure product is a white powdery solid with a melting point of 175.5-177.2 ° C, slightly soluble in water, and a density of approximately 1.618 g/cm ³
-Mechanism of action: Inhibits the biosynthesis of branched chain amino acids (leucine, isoleucine, valine), blocks cell division, and leads to weed death
-Main use: Suitable for crops such as corn, rice, wheat, sugarcane, lawns, etc., it has a special effect on preventing and controlling sedge weeds such as Aconitum carmichaelii and various broad-leaved weeds (such as Sorghum, ragweed, purslane, etc.), and is ineffective against grass weeds
-Application mode: spray on stems and leaves before or after seedling; Pre seedling dose of 70-90 g a.i./ha, post seedling dose of 18-35 g a.i./ha
-Safety: Acute oral/transdermal LD50>5000 mg/kg (low toxicity), but highly toxic to aquatic organisms (GHS category 1), environmental release prevention is required
-Development background: Developed by Nissan Chemical in Japan and promoted by Monsanto, with product names including Permit ®、 Sempra ® Wait

Precautions
This drug has high selectivity, and there are significant differences in drug resistance among different crop varieties. It is often necessary to use an antidote (such as MON 13900) in corn fields to reduce the risk of drug damage; Storage should be sealed, cool and dry, and avoid contact with strong oxidants.

Products :

Halosulfuron methyl CAS 100784-20-1
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