Halosulfuron-methyl
| Names | |
|---|---|
| Preferred IUPAC name
Methyl 3-chloro-5-{[(4,6-dimethoxypyrimidin-2-yl)carbamoyl]sulfamoyl}-1-methyl-1H-pyrazole-4-carboxylate | |
| Identifiers | |
3D model (JSmol)
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| 7783327 | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value). |
| EC Number |
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| E number | Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). |
| KEGG | |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| C13H15ClN6O7S | |
| Molar mass | 434.81 g·mol−1 |
| Density | 1.62 g/cm3 |
| Melting point | 175.5–177.2 °C (347.9–351.0 °F; 448.6–450.3 K) |
| Hazards | |
| GHS labelling:[1] | |
| GHS08: Health hazardGHS09: Environmental hazard | |
| Danger | |
| H360D, H410 | |
| P203, P273, P280, P318, P391, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Halosulfuron-methyl is a sulfonylurea post-emergence herbicide used to control some annual and perennial broad-leaved weeds and sedges (such as nutsedge/nutgrass) in a range of crops (particularly rice), established landscape woody ornamentals and turfgrass.[citation needed] It is marketed under several tradenames including Sedgehammer[2] and Sandea.[3]
Halosulfuron-methyl's HRAC classification is Group B (global, Aus), Group 2 (numeric), as it inhibits acetohydroxyacid synthase.[4]
Effects
[edit | edit source]Halosulfuron-methyl is systemic and selective, and acts as an inhibitor of acetohydroxyacid synthase (AHAS, also known as acetolactate synthase) restricting the biosynthesis of the essential amino acids, valine and isoleucine, thus restricting plant growth. Symptoms take several weeks to develop and include general stunting, chlorosis, and necrosis of the growing points. It typically does not affect other major annual and perennial weed grasses and broadleaves such as spurge, dandelions, lambsquarters, and oxalis.[citation needed]
References
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External links
[edit | edit source]- Halosulfuron-methyl in the Pesticide Properties DataBase (PPDB)