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Imprelis is a selective herbicide created by DuPont. The active ingredient is aminocyclopyrachlor, a synthetic auxin. [1] [2] Imprelis was registered with the United States Environmental Protection Agency [3] for sale in October 2010. [4] Sale of Imprelis was voluntarily suspended [5] a week before the EPA required sales stopped.
It was conditionally registered as Imprelis by DuPont in August 2010, and first used in Fall 2010. [3] The chemical is a systemic herbicide and acts by disrupting gene expression. Aminocyclopyrachlor belongs to the pyrimidine carboxylic acid chemical family and mimics auxin which is a growth-regulating hormone in dicots including broadleaf ...
2,4,5-Trichlorophenoxyacetic acid (also known as 2,4,5-T), a synthetic auxin, is a chlorophenoxy acetic acid herbicide used to defoliate broad-leafed plants. It was developed in the late 1940s, synthesized by reaction of 2,4,5-Trichlorophenol and chloroacetic acid. It was widely used in the agricultural industry until being phased out, starting ...
4-Hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors (HPPD inhibitors) are a class of herbicides that prevent growth in plants by blocking 4-Hydroxyphenylpyruvate dioxygenase, an enzyme in plants that breaks down the amino acid tyrosine into molecules that are then used by plants to create other molecules that plants need.
The documents revealed that DuPont had used the landfill near the Tennants’ farm as part of an increasingly elaborate cover-up. After discovering C8 in Lubeck’s water supply in the early 1980s, DuPont had dredged up 14 million pounds of C8-laced sludge from the unlined pits near the town wells and dumped it into the Dry Run landfill.
Chemical structure of 2,4-D, the prototypical chlorophenoxy herbicide. Chlorophenoxy herbicides are a subclass of phenoxy herbicides which includes: MCPA, 2,4-D, 2,4,5-T and mecoprop. [1] Large amounts have been produced since the 1950s for agriculture. [2]
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Chlorsulfuron is an ALS (acetolactate synthase) inhibitor herbicide, and is a sulfonylurea compound. [3] [4] It was discovered by George Levitt in February 1976 while working at DuPont, which was the patent assignee. [5] [6] [7]
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