除草剂:Imazethapyr

Common Name:Imazethapyr Molecular Formula: C15H19N3O3 Molecular Weight:289.3 Chemical Name: (RS)-5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid CAS No.: 81335-77-5 Physical & Chemical Character: Appearance: light yellow crystal, dark amber liquid; melting point: 169-173°C, boiling point: 180°C, vapor pressure: <0.013mPa(60°C); solubility(25°C): Water 1.4g/l, toluene 5g/l, acetone 48.5g/l, carbinol 105g/l, isopropanol 17g/l, pentane 0.9g/l, dimethyl sulfoxide 422g/l, methylene chloride 185g/l. Toxicity : The acute oral LD50 for technical imazethapyr was reported to be >5000 mg/kg for rats. The acute inhalation LC50 for rats exposed to imazethapyr is 3.27 mg/L. The dermal LD50 for rabbits exposed to technical imazethapyr was >2000 mg/kg. It was found to be slightly irritating to the rabbit eye, with complete recovery in 7 days. The technical material was found to be slightly irritating to the skin of male rabbits.Applications: It is applied preplant incorporated, preemergence, at cracking, and postemergence. The compound controls weeds by reducing the levels of three branched-chain aliphatic amino acids, isoleucine, leucine and valine, through the inhibition of aceto-hydroxyacid synthase, an enzyme common to the biosynthetic pathway for these amino acids. This inhibition causes a disruption in protein synthesis which, in turn, leads to an interference in DNA synthesis and cell growth. The compound is used to control grasses and broadleaved weeds including barnyardgrass, crabgrass, cocklebur, panicums, pigweeds, nightshade, mustard, smartweed, velvetleaf, jimsonweed, foxtails, seedling johnsongrass, lambsquarters, morningglory and others Products: 98%TECH; 5%,10% SL Packing: 25KG/ fibre drum; 200L/drum ,5L or 10L /fluorinated bottle or according to customer's requirement