The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
Mar. 16, 2021
Bayer Aktiengesellschaft, Leverkusen, DE;
Britta Olenik, Bottrop, DE;
Klaus Bernhard Haaf, Kelkheim, DE;
Lothar Lorentz, Waldbroel, DE;
Birgit Keil, Duesseldorf, DE;
Bernd Roesler, Wuppertal, DE;
BAYER AKTIENGESELLSCHAFT, Leverkusen, DE;
Abstract
The present invention relates to the crystal forms of methyl(2R*,4R*)-4-[[(5S)-3-(3,5-difluorophenyl)-5-vinyl-4H-isoxazole-5-carbonyl]amino]tetrahydrofuran-2-carboxylate (I) existing in the form of two stereoisomers: Methyl(2R,4R)-4-[[(5S)-3-(3,5-difluorophenyl)-5-vinyl-4H-isoxazole-5-carbonyl]-amino]tetrahydrofuran-2-carboxylate of formula (Ia) and methyl (2S,4S)-4-[[(5S)-3-(3,5-difluoro-phenyl)-5-vinyl-4H-isoxazole-5-carbonyl]amino]tetrahydrofuran-2-carboxylate of formula (Ib), to a method for preparing the crystal forms, to the use for preparing stable agrochemical formulations, and to the use in the field of agriculture for controlling harmful plants.