METSULFURON-METHYL

• Post Date:

  Nov 04,2013

• Expiry Date:

  May 03,2014

• Detailed Description:

  Cas No. :74223-64-6

  TECHNICAL --- HERBICIDE: Metsulfuron-methyl CAS No.: 74223-64-6 Content: 95%TC NOMENCLATURE metsulfuron-methyl Chemical Abstracts name: methyl 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoate CAS RN: [74223-64-6] metsulfuron Common name: metsulfuron (BSI, WSSA, ANSI, draft E-ISO, (m) draft F-ISO) IUPAC name: 2-(4-methoxy-6-methyl-1,3,5-triazin-2-ylcarbamoylsulfamoyl)benzoic acid Chemical Abstracts name: 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acid CAS RN: [79510-48-8] PHYSICAL CHEMISTRY metsulfuron-methyl Mol. wt.: 381.4 M.f.: C14H15N5O6S Form: Colourless crystals; (tech., off-white solid, with a faint ester-like odour). M.p.: 158 ℃ V.p.: 3.310-7 mPa (25 ℃) KOW: logP = -1.74 (pH 7) Henry: 2.310-10 Pa m3 mol-1 (calc.) S.g./density: 1.47 Solubility: In water 0.55 (pH 5), 2.79 (pH 7), 213 (pH 9) (all in g/l, 25 ℃). In hexane 0.00079, xylene 0.58, ethanol 2.3, methanol 7.3, acetone 36, dichloromethane 121 (all in g/l, 20 ℃). Stability: Stable in air up to c. 140 ℃. Hydrolysis DT50 (25 ℃), 22 d (pH 5), stable (pH 7 and 9). pKa: 3.3 metsulfuron Mol. wt.: 367.3 M.f.: C13H13N5O6S Form: Solid. APPLICATIONS metsulfuron-methyl 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 in the crop. Metabolic basis of selectivity in sulfonylureas reviewed (M. K. Koeppe & H. M. Brown, Agro-Food-Industry, 6, 9-14 (1995)). Mode of action: Selective systemic herbicide absorbed through the roots and foliage, with rapid translocation both acropetally and basipetally. Susceptible plants cease growth almost immediately after post-emergence treatment, and are killed in 7-21 days. Surfactants increase the activity of metsulfuron-methyl on certain broad-leaved weeds. Uses: Metsulfuron-methyl controls a wide range of annual and perennial broad-leaved weeds in wheat, barley, rice and oats, by either pre- or post-emergence application, at 4-7.5 g/ha post-emergence.

• CAS Registry Number:

  74223-64-6

• Synonyms:

  ;2-[[[[(4-Methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acid methyl ester;Metsulfuron Me;DPX-T6376;Escort;Gropper;methyl 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoate;Metsulfuron-methyl;Metsulfuron-ethyl;methyl 2-{[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl]sulfamoyl}benzoate;Methsulfuron-methyl;Methyl 2-(((4-methoxyl-6-methyl-1,3,5-triazin-2-yl)ureido)sulfonyl)benzoate;

• Molecular Formula:

  C₁₄H₁₅N₅O₆S

• Molecular Weight:

  381.3638

• Molecular Structure:

  

• Hazard Symbols:

   N:Dangerous for the environment;
  

• Risk Codes:

  R50/53:;
  

• Safety Description:

  S60:;
  S61:;
  

• Company:

  Nanjing Essence Fine-chemical Co., Ltd     [ China ]        

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  Valerie Zhou

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