Crystalline form of...

C - Chemistry – Metallurgy – 07 – D

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C07D 413/10 (2006.01) A01N 43/80 (2006.01)

Patent

CA 2691880

The present invention relates to crystalline forms of [3-(4,5-dihydro-3- isoxazolyl)- 2-methyl-4-(methylsulfonyl) phenyl]-(5-hydroxy-1 -methyl-1H-pyrazol-4-yl)methanone, which is also known by the common name topramezone. The invention also relates to a method for the production of these crystalline forms, and to formulations which contain one of these crystalline forms of topramezone for protecting plants.

La présente invention concerne des formes cristallines de la [3-(4,5-dihydro-3-isoxazolyl)-2-méthyl-4-(méthylsulfonyl)phényl]-(5-hydroxy-1-méthyl-1H-pyrazol-4-yl)méthanone, qui est connue sous le nom commun de topramézone. L'invention concerne également un procédé de fabrication de ces formes cristallines, ainsi que des formulations pour la protection des plantes qui contiennent une de ces formes cristallines de la topramézone.

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