In:
Pest Management Science, Wiley, Vol. 59, No. 11 ( 2003-11), p. 1260-1264
Abstract:
LGC‐42153, 2‐fluoro‐1‐[3‐(4,6‐dimethoxypyrimidin‐2‐ylcarbamoylsulfamoyl)pyridin‐2‐yl]propyl methoxyacetate, is a new sulfonylurea herbicide for use in rice. Its breakdown and metabolism were studied in soil under flooded condition using radioactive tracers labelled at either the propyl group or the pyrimidine ring. The half‐life of LGC‐42153 was approximately 3.0 days. The mass balance over 120 days ranged from 94.0 to 104.2% of applied radiocarbon, and no significant amount of volatiles or [ 14 C]carbon dioxide were observed. Solvent non‐extractable radiocarbon reached 11 ∼ 14% of applied radiocarbon at 120 days after treatment. The major metabolic reaction was the cleavage of the carboxyl ester bond to give 1‐(4,6‐dimethoxypyrimidin‐2‐yl)‐3‐[2‐(1‐hydroxy‐2‐fluoropropyl)pyridine‐3‐sulfonyl] urea, which underwent hydrolysis of the sulfonylurea bridge giving 2‐(1‐hydroxy‐2‐fluoro)propyl‐3‐pyridinesulfonamide and 4,6‐dimethoxy‐2‐aminopyrimidine. Copyright © 2003 Society of Chemical Industry
Type of Medium:
Online Resource
ISSN:
1526-498X
,
1526-4998
Language:
English
Publisher:
Wiley
Publication Date:
2003
detail.hit.zdb_id:
2003455-6
SSG:
12
Permalink