Pure potassium salt of clavulanic acid
US4367175A · kind A · utility
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Key dates
| Filing date | May 7, 1980 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | May 7, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P17/188
- WIPO fieldOrganic fine chemistry
- 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.