Composition and rodenticide bait comprising difethialone and method for controlling target rodent pests
US10506808B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 6, 2016 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Dec 6, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N25/004
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is to a composition including difethialone, containing a configurational stereoisomer of difethialone, referred to as a hetero-stereoisomer, of formula 3-(4′-bromobiphenyl-4-yl)-1-(4-hydroxythiocoumarin-3-yl)-1,2,3,4-tetrahydronaphthalene, in which the carbon atoms 1 and 3 of the 1,2,3,4-tetrahydronaphthalene group have different absolute configurations, the composition including an amount of a dextrorotatory enantiomer of the hetero-stereoisomer such that the ratio of this amount to the amount of difethialone in the composition is less than 10%; the amount of the dextrorotatory enantiomer of the hetero-stereoisomer of difethialone in the composition being different from the amount of levorotatory enantiomer of the hetero-stereoisomer of difethialone in the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.