Expectorant compound, preparation method thereof and use thereof
US11993561B2 · kind B2 · utility
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18Claims
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Assignee
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Key dates
| Filing date | Jul 1, 2020 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Apr 2, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure discloses an expectorant compound, and specifically discloses compounds represented by formula I and formula II, pharmaceutically acceptable salts or tautomers thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.