Nicosulfuron

Common name nicosulfuron (BSI, ANSI, draft E-ISO); no name (Brazil)

IUPAC name 2-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-N,N-dimethylnicotinamide; 1-(4,6-dimethoxypyrimidin-2-yl)-3-(3-dimethylcarbamoyl-2-pyridylsulfonyl)urea 

Chemical Abstracts name 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamide 

CAS RN [111991-09-4] 

Mol. wt. 410.4 

M.f. C15H18N6O6S 

Form Colourless crystals. 

M.p. 169-172 癈 

V.p. <8 ´ 10-7 mPa (25 癈) 

KOW logP = -0.36 (pH 5), -1.8 (pH 7), -2 (pH 9) 

Henry <4.68 ´ 10-9 Pa m3 mol-1 (25 癈) 

S.g./density 0.313 (bulk) 

Solubility In water 0.07 g/l. In acetone 18, ethanol 4.5, chloroform, dimethylformamide 64, acetonitrile 23, toluene 0.370, hexane <0.02, dichloromethane 160 (all in g/kg, 25 篊). 

Mode of action Selective systemic herbicide, absorbed by the foliage and roots, with rapid translocation in xylem and phloem to the meristematic tissues. 

Uses Selective post-emergence control in maize of annual grass weeds.