Flucarbazone sodium hemihydrate method and composition
US10238112B1 · kind B1 · utility
1Cited by
3References
1Claims
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Key dates
| Filing date | Jan 24, 2018 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Jan 24, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N47/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A flucarbazone sodium hemihydrate method and composition. A method of suppressing growth of grass and broadleaf weeds is described including applying to said weeds at least one dust-free composition comprising flucarbazone sodium-hemihydrate as an active ingredient. A method for preparing flucarbazone sodium-hemihydrate is also described including treating 4,5-dihydro-3-methoxy-4-methyl-5-oxo-N-[[2-(trifluoromethoxy)phenyl]sulfonyl]-1H-1,2,4-triazole-1-carboxamide (MSU) with aqueous sodium hydroxide under pH-controlled conditions; and confirming that a hemihydrate flucarbazone sodium of the following formula: has been obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.