Pesticide>>Herbicides >>Thifensulfuron-Methy

Description:ISO 1750 (published)
IUPAC: 3-(4-methoxy-6-methyl-1,3,5-triazin-2-ylcarbamoylsulfamoyl)thiophene-2-carboxylic acid
CAS: 79277-67-1
Formula: C11H11N5O6S2
Activity: herbicides (triazinylsulfonylurea herbicides)
Notes: When this substance is used as an ester or a salt, its identity should be stated, for example thifensulfuron-methyl [79277-27-3].
The name “thiameturon” was formerly approved by the Weed Science Society of America.

Structure:

Thifensulfuron-Methyl APPLICATIONS
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. Crop selectivity derives from metabolism (de-esterification) (M. K. Koeppe & H. M. Brown, Agro-Food-Industry, 6, 9-14 (1995)). Mode of action Selective systemic herbicide, absorbed by the leaves and roots, with translocation acropetally and basipetally throughout the plant. Uses Used in winter and spring wheat, winter and spring barley, rye, triticale, oats, soya beans, pasture and maize (grain and fodder). Post-emergence control of broad-leaved weeds and also loose silky-bent (Apera spica-venti) in winter and spring cereals. Application rates 9-60 g/ha. Normally used in combination with metsulfuron-methyl. Phytotoxicity Treated cereals may experience a temporary inhibition of growth and colour changes in the leaves, but these have no ultimate effect on the yield. Formulation types TB; WG. Selected tradenames: 'Harmony' (Du Pont); 'Pinnacle' (Du Pont)

Thifensulfuron-Methyl ANALYSIS
For tech./formulations, by lc using u.v. For residues, by lc using column switching technique.

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