Chemistry:Karsil
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Karsil (also called erlüjixiancaoan) is an acylanilide herbicide, similar to propanil. It is potent against annual grasses and broadleaved weeds in celery, and a strong inhibitor of photosynthesis.[1] It is approved for use in China.[2]
When degraded by bacteria, karsil becomes 3,4-dichloroaniline and 3,3',4,4,'-tetrachloroazobenzene.[1] Karsil is theorised to form hydrogen bonds with the protein of an enzyme involved in the oxidation of water, creating its herbicidal potential, similar to diuron and atrazine.[3]
Karsil has been manufactured by Niagara Chemical Division.[4] If ingested, activated charcoal absorbs it.[5] Karsil is ten times as active as atrazine at the chloroplast level.[6]
References
- ↑ 1.0 1.1 Sharabi, Nagim El-Din; Bordeleau, Lucien M. (September 1969). "Biochemical Decomposition of the Herbicide N-(3,4-Dichlorophenyl)-2-Methylpentanamide and Related Compounds". Applied Microbiology 18 (3): 369–375. doi:10.1128/am.18.3.369-375.1969. PMID 5373674.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedbcpc - ↑ van Overbeek, J. (1962). "Physiological Responses of Plants to Herbicides". Weeds 10 (3): 170–174. doi:10.2307/4040775.
- ↑ Wallnöfer, P. R.; Safe, S.; Hutzinger, O. (1 July 1972). "Die hydroxylation des herbizids karsil (N-(3,4-Dichlorophenyl)-2-methylpentanamid) durch Rhizopusjaponicus". Chemosphere 1 (4): 155–158. doi:10.1016/0045-6535(72)90019-7.
- ↑ "Analytical reference standards and supplemental data for pesticides and other organic compounds". January 1981. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9101PT4X.txt.
- ↑ Masatoshi, Ghobara; Duke, Stephen O.; Takematsu, Tetsuo (August 26, 1987). "MT-5950, a New Anilide Herbicide, Inhibits PSII at a Site that Slightly Overlaps the Triazine Binding Site". Agric. Biol. Chem.: 465–472. https://www.jstage.jst.go.jp/article/bbb1961/52/2/52_2_465/_pdf. Retrieved 15 March 2025.
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