Method of reducing α, β unsaturated ketones in opioid compositions
US7939543B2 · kind B2 · utility
55Cited by
4References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2006 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Jun 16, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P29/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for reducing the level of α, β-unsaturated ketone in an opioid analgesic composition by hydrogenation the opioid analgesic composition with diimide or a diimide progenitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.