Process for the purification of clavulanic acid
US4144242A · kind A · utility
11Cited by
0References
11Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 16, 1976 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Dec 16, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P17/188
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention provides the compound (2R,5R,Z)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo-[3,2,0]-heptane -2-carboxylic acid and its salts in purified form and pharmaceutical compositions containing them and a process for the purification of such compounds by conversion in aqueous media to the lithium salt of the above acid and precipitation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.