Page Views: 306 Date Added: 05/20/2010 Last Updated: 05/20/2010 Expiry Date: 05/15/2029 Product/Service Details pyrazosulfuron-ethyl Common name: pyrazosulfuron-ethyl IUPAC name: ethyl 5-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-1-methylpyrazole-4-carboxylate Chemical Abstracts name: ethyl 5-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-1-methyl-1H-pyrazole-4-carboxylate CAS RN: [93697-74-6] pyrazosulfuron Common name: pyrazosulfuron IUPAC name: 5-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-1-methylpyrazole-4-carboxylic acid Chemical Abstracts name: 5-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-1-methyl-1H-pyrazole-4-carboxylic acid CAS RN: [98389-04-9] PHYSICAL CHEMISTRY pyrazosulfuron-ethyl Mol. wt.: 414.4; M.f.: C14H18N6O7S; Form: Colourless crystals. M.p.: 177.8-179.5 °C. V.p.: 4.2x10-5 mPa (25 ºC). KOW: logP = 1.3 (unstated pH). S.g./density: 1.46 (20 ºC). Solubility: In water 9.96 mg/l (20 ºC). In methanol 4.32, hexane 0.0185, benzene 15.6, chloroform 200, acetone 33.7 (all in g/l, 20 ºC). Stability: Stable at 50 ºC for 6 months. Relatively stable at pH 7. Unstable in acidic or alkaline media. pKa: 3.7 pyrazosulfuron Mol. wt.: 386.3; M.f.: C12H14N6O7S APPLICATIONS pyrazosulfuron-ethyl Biochemistry: Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acids valine and isoleucine, hence stopping cell division and plant growth. Selectivity derives from rapid metabolism (demethylation of methoxy group) in the crop. Mode of action: Systemic herbicide, absorbed by roots and/or leaves and translocated to the meristems. Uses: Control of annual and perennial broad-leaved weeds and sedges, pre- or post-emergence in wet-sown and transplanted rice crops, at 15-30 g/ha. Formulation types: GR; SC; WG; WP. MAMMALIAN TOXICOLOGY pyrazosulfuron-ethyl Oral: Acute oral LD50 for rats and mice >5000 mg/kg. Skin and eye: Acute percutaneous LD50 for rats >2000 mg/kg. Non-irritating to skin and eyes (rabbits). Non-sensitising to skin (guinea pigs). Inhalation: LC50 for rats >3.9 mg/l air. NOEL: (78 w) for mice 4.3 mg/kg daily. ADI: 0.043 mg/kg. Other: Non-mutagenic in the Ames test. Non-teratogenic in rats and rabbits. Toxicity class: WHO (a.i.) III (Table 5) ECOTOXICOLOGY pyrazosulfuron-ethyl Birds: Acute oral LD50 for bobwhite quail >2250 mg/kg. Fish: LC50 (96 h) for rainbow trout and bluegill sunfish >180 mg/l; (48 h) for carp >30 mg/l. Daphnia: TLm (3 h) >40 ppm. Algae: I50 for green algae (Scenedesmus acutus) 1 ppm. Bees: LD50 (contact) >100 ug/bee. ENVIRONMENTAL FATE pyrazosulfuron-ethyl Animals: In rats, after 48 h, 80% of applied pyrazosulfuron-ethyl is excreted in urine and faeces. The major metabolic reaction is demethylation of the methoxy group. Soil/Environment: In soil, DT50

Pyrazosulfuron-Ethyl

Company Information (Shanghai Skyblue Chemical Co., Ltd.)

Company Profile: Shanghai Skyblue Chemical Co., Ltd. is an integrated company located in Pudong New Area of Shanghai China. Our business scopes include the development, manufacturing, researching, and marketing agrochemicals. We are capable of supplying a wide range of high quality agrochemicals, including insecticides (especially household and public health insecticides), fungicides, herbicides, pesticide synergists and other relative agrochemicals in both technical grade and formulation in different packages as per customer's requirements. To make quality products is our credo. We always target to provide our customers with top quality products along with moderate prices and professional services, and endeavor to be a 360o-solution supplier for agrochemicals. Currently our products are being exported to more than twenty countries and enjoy high reputation in the global market. On the basis of equality and mutual benefits, we always look forward to establishing and maintaining long term partnerships with all customers toward a future of resplendence. At present we can supply the following products: Insecticides: Acetamiprid,Alpha-Cypermethrin, Aluminium Phosphide, Azamethiphos, Beta-Cyfluthrin, Bifenthrin, Bioallethrin, Carbaryl, Carbofuran, Carbosulfan, Cartap, Chlorpyrifos, Cyfluthrin, D-Allethrin, D-Cyphenothrin, Deltamethrin, Dichlorvos, Diethyltoluamide, Dimehypo, Dimethoate, D-Phenothrin, D-Tetramethrin, Empenthrin, Es-bioallethrin, Es-Fenvalerate, Etofenprox, Fenitrothion, Fenpropathrin, Fenthion, Fenvalerate, Fipronil, Flumethrin, Hydramethylnon, Imidacloprid, Imiprothrin, Lambda-cyhalothrin, Malathion, Permethrin, Pirimiphos-methyl, Prallethrin, Propoxur, S-Bioallethrin, Tefluthrin, Tetramethrin, Thiocyclam, Transfluthrin Fungicides: Clofentezine, Difenoconazole, Mancozeb, Metiram, Propiconazole, Propineb, Tebuconazole, Thiabendazole Herbicides: Acetochlor, Ametryn, Atrazine, Bensulfuron-methyl, Butachlor, Chlorimuron-ethyl, Chlorsulfuron, Cyanazine, Fenchlorazole, Fenoxaprop-p-ethyl, Glyphosate, Metsulfuron-methyl, Nicosulfuron, Prometryn, Pyrazosulfuron-ethyl, Quinclorac, Quizalofop-p-ethyl, Simazine, Simetryn, Terbuthylazine, Terbutryn, Tribenuron-methyl Pesticide Synergists: Piperonyl Butoxide, MGK 264. >> More Website URL: http://www.bridgat.com/u15636