Process for obtaining cefotetan with high yield
US7560545B2 · kind B2 · utility
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3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Nov 6, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for obtaining cefotetan acid substantially free of tautomer, by treating crude cefotetan with Al3+ ions which cause the tautomer to precipitate. The precipitate is eliminated by filtration to provide a solution from which practically tautomer-free cefotetan is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.