Imazethapyr

Synonyms

5-Ethyl-2(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid; 2-(4,5-Dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl)-5-ethyl-3-pyridinecarboxylic acid; AC 263,499; CL 263499; Pivot; Pursuit; [ChemIDplus]

Category

Herbicides, Imidazolinone

Description

White to off-white solid; [Merck Index] Colorless solid; [HSDB]

Sources/Uses

Selective imidazolinone herbicide; [Merck Index] Used to control annual and perennial grasses and broad-leaved weeds in soy beans; [HSDB]

Comments

The 5-desethyl analog of imazapyr; [ChemIDplus] In acute poisoning cases following ingestion of large amounts of an imidazolinone herbicide, patients have vomiting, hypotension, liver and kidney dysfunction, CNS impairment, and respiratory distress; May cause burns to the GI tract after ingestion; Not a skin irritant or skin sensitizer; [HSDB] May cause irritation; [MSDSonline] See "Imazapyr."

Biomedical References

LC50 (rat) = 3,270 mg/m3

Other CNS neurotoxin

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Processes

Industrial Processes with risk of exposure:

• Farming (Pesticides)