Thifensulfuron methyl

Cereals MEKC UV 0.02-0.04 mg kg- 50mM SDS,25mM sodium phosphate (monobasic), pH 6.15 Metsulfuron-methyl, thifensulfuron-methyl, chlorsulfuron, rimsulfuron, tribenuron-methyl 125... 

Soybeans CZE UV 11-85 ugkg- 50 mM acetate Acifluorfen, 2,4-D, bentazone, thifensulfuron-methyl, chlorimuron-ethyl, imazaquin 129... 

Soybean Chlorimuron-ethyl + thifensulfuron-methyl Post Good j... 

Product-ion MS-MS mass spectra of sulfonylureas, based on a protonated molecule generated by ESI, were reported by Li et al. [53], For most compounds, only two or three prodnct ions were detected, e.g., m/z 141 and 167 for chlorsulfuron, and m/z 150 and 199 for sulfometuron methyl. The [R,N=C=0+H]" fragment is a common fragment in MS-MS. Negative-ion MS-MS mass spectra of chlorsulfuron, metsnUuron-methyl, thifensulfuron-methyl, and tribenuron-methyl were tabulated [43, 52]... 

Thifensulfuron-methyl 3-(4-Methoxy-6-methyl-l,3,5-triazin-2-ylcarbamoylsulfamoyl)thiophen-2-carboxylic acid 387.4 4.0 6.3 6 to 12 n.f. 

Propoxycarbazone-sodium (2) can be applied straight or in tank mixtures with other herbicides such as triasulfiiron, metsulfiiron-methyl, chlorsulfiiron, thifensulfuron-methyl, prosulfuron, carfentrazone, dicamba, bromoxynil, dopyr-alid, MCPA amine or ester, 2,4-D amine or ester, metribuzin or fluroxypyr. Olympus flex is a ready to use formulation with mesosulfuron. 

Phenoxy acids (2,4-dichlorophenoxy acetic acid, MCPA, and 2,4,5-trichlorophenoxy acetic acid) and similar acid herbicides (benzaton, dicamba, dichlorprop, and mecoprop) sulfonurea herbicides (chlorsulforon, metsulforon methyl, tribenuron methyl, and thifensulfuron methyl) triazine herbicides (methoxy-s-triazines, chloro-s-triazines, alkylthio-s-triazines) phenylurea herbicides (fenuron, monolinuron, and diuron), metabolites of the fungicide thiophanate-methyl (carbenazim and 2-aminobenzimidazole)... 

Four sulfonylurea herbicides (thifensulfuron methyl, metsulfuron methyl, chlor-sulfuron, tribenuron methyl) were extracted from water and soil samples and... 

Zhou, Q. Wang, W. Xiao, J. (2006a). Preconcentration and determination of nicosulfuron, thifensulfuron-methyl and metsulfuron-methyl in water samples using carbon... 

The thiophenesulfonamide (XIV), used for thifensulfuron methyl is prepared (, 2) as shown in Equation 11. TTie reaction of 2-chloroacrylonitrile and methyl thioglycolate yields methyl 3-amino-2-thiophenecarboxylate which is converted to the sulfonamide via the Meerwein chlorosulfonation and amination. 

A number of possible crop selectivity mechanisms have been investigated (see Brown, H. M. Pestic. Sci. 1990 (in press)). Differential uptake and/or translocation of the selective herbicide between the tolerant crop and sensitive weeds has been ruled out as the basis for crop selectivities in several specific cases. For example, Sweetser et al. ( found no ccnrelation between chlorsulfuron uptake or translocation and sensitivity to this herbicide in a study of 7 plant species, and similar conclusions were drawn in studies of thifensulfuron methyl tolerance in soybeans (28). Lichtner (29) has shown that sulfonylurea herbicide uptake and translocation in plants is not carrier-mediated, but instead depends on the physical properties of the herbicide (pKa, log P) and proceeds through an acid-trapping mechanism common to higher plants. Given this information, we conclude that differential uptake and/or translocation is unlikely to account for any of the sulfonylurea crop selectivities discovered to date. 

---