Pure potassium salt of clavulanic acid
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United States of America Patent
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Jan 4, 1983
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N/A
app pub date -
May 7, 1980
filing date -
Feb 7, 1975
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Expired
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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.
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