Nicosulfuron
Title: Nicosulfuron
CAS Registry Number: 111991-09-4
CAS Name: 2-[[[[(4,6-Dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamide
Manufacturers' Codes: SL-950; MU-495; DPX-V9360
Trademarks: Accent (DuPont); Nostoc (Ipesa)
Molecular Formula: C15H18N6O6S
Molecular Weight: 410.41
Percent Composition: C 43.90%, H 4.42%, N 20.48%, O 23.39%, S 7.81%
Literature References: Post-emergence sulfonylurea herbicide. Prepn: F. Kimura et al., EP 232067 (1987 to Ishihara Sangyo Kaisha); M. A. Hanagan, US 4789393 (1988 to DuPont); and structure-activity study: S. Murai et al., ACS Symp. Ser. 504, 43 (1992). Activity in soil: T. C. Mueller et al., Tenn. Farm Home Sci. 167, 17 (1993). Adsorption on clay minerals: L. Ukrainczyk, N. Rashid, J. Agric. Food Chem. 43, 855 (1995). Field trial for johnsongrass in corn and effect on yield: N. G. Gubbiga et al., Weed Technol. 9, 574 (1995).
Properties: Colorless white solid, mp 169-173°. Vapor pressure at 25°: 1.2 ´ 10 -16 mm Hg. pKa (25°): 4.6. Soly in water (ppm): 44 (pH 3.5); 22000 (pH 7).
Melting point: mp 169-173°
pKa: pKa (25°): 4.6
Use: Herbicide.

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