Sustained-release buprenorphine formulations
US10744132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2017 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Sep 12, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/36
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An injectable pharmaceutical composition includes a solution of 3-acyl-buprenorphine, or a pharmaceutically acceptable salt thereof, in a biocompatible organic solvent, wherein the injectable pharmaceutical composition exhibits a steady release profile lasting over one week when injected into a patient. The acyl group is an alkylcarbonyl group, and an alkyl portion of the alkylcarbonyl group is a straight-chain, branched-chain, having 1-20 carbon atoms. The biocompatible organic solvent is N-methyl-2-pyrrolidone, ethyl acetate, ethanol, butanol, 2-butanol, isobutanol, ispropanol, glycerin, benzyl benzoate, dimethyl sulfoxide, N,N-dimethylacetamide, propylene glycol, dimethyl glycol, benzyl alcohol, or a combination of two or more thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.