Pharmaceutically acceptable salts and polymorphic forms of hydrocodone benzoic acid enol ester and processes for making same
US9815844B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Mar 10, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Mar 10, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions comprising hydrocodone benzoic acid enol ester to form novel prodrugs including hydrocodone benzoic acid enol ester salts, and various polymorphs. Also provided are processes for the preparation of hydrocodone benzoic acid enol ester salts, and various polymorphs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.