Cloransulam-methyl 95% technical
NOMENCLATURE
Common name cloransulam-methyl (BSI, pa ISO, ANSI)
IUPAC name methyl 3-chloro-2-(5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidin-2-ylsulfonamido)benzoate; methyl 3-chloro-N-(5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidin-2-ylsulfonyl)anthranilate
Chemical Abstracts name methyl 3-chloro-2-[[(5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)sulfonyl]amino]benzoate
CAS RN [147150-35-4]; (acid [159518-97-5])
PHYSICAL CHEMISTRY
Mol. wt. 429.8; (acid 415.8) M.f. C15H13ClFN5O5S; (acid C14H11ClFN5O5S) Form Off-white powder. M.p. 216-218 °C KOW logP = 1.12 (pH 5), -0.365 (pH 7), -1.24 (pH 8.5), 0.268 (distilled water) S.g./density 1.538 (20 °C) Solubility In water 3 ppm (pH 5), 184 ppm (pH 7) (both 25 °C). Stability Stable to aqueous hydrolysis (pH 5), slowly degraded (pH 7), rapidly hydrolysed (pH 9). DT50 for aqueous photolysis 22 min. pKa 4.81 (20 °C)
APPLICATIONS
Biochemistry Inhibits the acetolactate synthase (ALS) enzyme. The primary site of activity is in plant meristems. Soya beans quickly metabolise cloransulam-methyl into a non-active form; DT50 <5 h. Uses Applied to the soil surface or incorporated pre-emergence or post-emergence in soya beans, to control broad-leaved weeds. Applied by ground |
