Quaternary ammonium salt compound, preparation method therefor and use thereof
US12221414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2020 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | May 14, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D413/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A quaternary ammonium salt compound of formula I is fast-acting and has a long-term local anaesthetic effect after a single administration, the sensory nerve block time being longer than the motor nerve block time, has both a long-acting local anaesthetic effect and a selective local anaesthetic effect, and also significantly reduces the side effects of quaternary ammonium salt compounds with the structural features of surfactants and is highly safe; thus, the compound of formula I and the pharmaceutically acceptable salt thereof can be used for the preparation of saft drugs having a long-term local anaesthetic effect and a selective local anaesthetic effect
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.